Probation failure due to performance /job misrepresentation

So I’ve just failed my probation at a job as a mid weight product designer. The job description was severly misrepresented to me however. I had been told at the interview that there was a ux agency but they were working on the portal and there was going to be collaboration and mentorship opportunities, but I was working specifically on the website, branding and design system. The description also said I would lead the branding statrgy and marketing designs and work with product owners and developers. When I joined I was told actually the product owners and decelopers work with the portal and I’ll be working with an external developer (who I wasnt really allowed to contact much as he was invoiced for hourly).

A month in and the agency was given the important home page that I had already said that I needed to work on but it was passed over without a discussion between my manager (marketing officer) and I. A few weeks later, another page was passed on to them. A week later, so was the UI kit. I pushed back multiple times on this, and explained why I needed to work on the ui kit and the website pages but this was ignored. Why? Because I was told that my priority was a PowerPoint template. The agency ended up just collaborating with me by way of “show and tell” sessions where they designed then showed me and my manager for feedback- which isn’t collaboration at all!

I had been told when I joined by my manager that the last designer had lost their job as they didn’t do product design work but was forced to do branded documents and PowerPoints and I was ensured this would not happen again and my time would be protected. This wasn’t the instance as I continued to have ad ho c last minute "prioritised" PowerPoints/branded documents (litearlly changing the font and putting a logo on a page) thrown at me- and I raised this as concerns in many 121’s. I constantly pushed to collaborate with the agency on these pages/take them over completely and this didn’t happen -as a result of pushback from the agency and my manager allowing it. A while later, I was told that I shouldn’t work on any branding projects either as they were also hiring a branding agency!

Anyway, for four months I’ve done my work- the process of a “hub” on the website and PowerPoint presentations. I’ve received design feedback throughout but took this as iteration and I was never sat down with any concerns about my work at all. The week before, she brought up a concern that she felt I had "lost some of my spirit" and I mentioned that perhaps part of it was the disconnect from the agency- but I asked her how to improve and alleviate her concern and she said "nothing at all, just take care of yourself and communicate."

All of a sudden on Friday, my manager said the user interview report I handed in (which was just a of quotes from transcipts that were categorised and some light insights) was not good enough and sent me an example of a refined report. I tried to explain that I had only conducted 4/8 user interviews so it wouldn’t make sense to have a refined report yet as the other four were due to happen the next week. We also had a back and forth as I had (verbally and via email) promised anonymity to the participants and that I would not attribute names/professions to direct quotes without written consent defying research/client ethics and she said regardless, I had to do it. She said as shes the manager, she should know who says what to "humanise the report". I said i wanted to double check with compliance and she discouraged this then said I was being disrespectful with my pushback.

On Monday, I was lo and behold told to prioritise another PowerPoint and at 5 I got a call to say that’s the end of my employment. I was given that my work was not up to standard for weeks and that she thought she didn’t have to spell it out through the feedback. I tried to ask why there were no concerns brought up, performance tracking or documentation, the chance to improve and she said being in probation waived all of this. She then admitted that the job description ended up being very different to the Job expectations and expressed she can understand my frustration that I’ve essentially spent 4 months working on PowerPoints which isn’t a product design job or what was highlighted in the job description.

I am honestly feeling quite low about this as I feel I’ve had professional damage impact from not even having an end to end project and only PowerPoints to show for my time- nothing that can be added to my portfolio at all. The agency had managed to complete the two pages and the ui kit which would have been vital for me. I’m just disappointed as I feel I was squeezed out of my job and my manager withheld crucial information about my work/performance that led to me being let go. Is this normal and I’m just unlucky? Not sure what I’m asking for but I guess any advice or positivities on the above would be amazing as this has come at a really hard time and a shock. Maybe I just wanted to have a bit of a rant too so any response is great.

Not sure if this was the right flair but couldn’t find a better one-

TDLR: got hired as a product designer but became a glorified PowerPoint designer who had to work in between a ux agency and branding agency where my role responsibilities were severely blurred and blocked. I was let go for performance where I was told I should have taken my feedback rounds (none of which was ever negative or brought up as a concern) as a sign that my work wasn’t up to scratch and being in probationwaived my right to performance tracking/documentation and chance to improve.