My SRS build is doing very poorly, Im relatively new and am struggling completing tier 8 maps. This is also my first time playing a life build, Anyone willing to give me some advice?

https://www.pathofexile.com/account/view-profile/RosDaddy/characters

Baron is to expensive and im not the greatest at making money. I have acquistion and sell my basic items I find.

I played a CI flameblast during breach and a CI blade vortex during legacy. I was able to do tier 15 maps legacy league.

This is my first life build and I was following this guide but didn't realize how expensive baron was going to be. https://www.pathofexile.com/forum/view-thread/1862209

I speced into alot of strength nodes planning for baron, which i cant afford.

I also feel VERY squishy for having 5.3k life and max resisits (except chaos).

My damage is not good and my zombie tanks are getting rekt.

I dont want to build a new character. I want to do tier 15 maps then eventually purchase the baron.

Anyone have advice on to move forward?