Why is Pantene ruining my hair ?!

My hair is moderately course wavy but thin (density). It’s always been frizzy and reacts poorly in humidity.

I have been going conditioner free for years and instead opted for a fructus hair food mask. My hair responds VERY WELL TO THIS.

However I bought the Pantene conditioner and mask line because I saw a lot of beauty hair gurus saying silicone and Pantene aren’t bad. I thought back to my childhood using Pantene and thought yeah I think it made my hair soft. I thought maybe silicones would help seal the cuticle or something so it would be shiny?

What’s happened consistently is an absolute disaster, completely uncontrollable and frizzy hair, no definition to waves or curls and it’s feeling courser than ever.

I did a redline abc mask to try and calm my hair down and it was WAY better and softer but the next day it’s back to extremely dry frizzy undefined humidity seeking coarse disaster hair.

What do I do? Is there a way i am meant to use Pantene or is it not suitable for my hair at all? How do I get it back to the way it was because it seems like it’s done some permanent damage?

Thank you