Looking for advice and guidance.

Good Afternoon everybody, I hope you are all well today, i was looking for some help if possible, im pretty new to POE in general, i have 120 hours in POE2 now. I have hit a bit of a wall, I see people running some crazy damage numbers on spark, I cannot seem to get my damage much more than it is now. I am pretty sure im missing something pretty fundamental. So I wanted to post this as a learning exercise for me. I dont do bad, i clear t15s easily and kill map bosses within 10 seconds or so

Now ignore the resistances i know i will catch some heat for them but in terms of gear, i think im running an OK set, i tried to buy a 4 div wand that i thought was an improvement, it has more int, higher skill modifier, more mana and it wasnt as good as my current wand. Im missing something, I cannot understand where i scrape more damage from, The gear i look at doesnt look that much better than mine. I dont have crazy money, about 5 div on me.

So is this an issue with, build, jewels, passives, gear, my understanding or a bit of everything haha.

This community has been great so far and im just trying to learn more.

Thank you in advance for any advice that can be given.