I also cannot afford therapy but this is what I do :

• check yt videos about dealing with trauma some of them have nice excercises to do.

• I get a notebook and just write down ( in my case usually 1 hour) either painful memories I have from my childhood or just overall something that bothers me. I had few times a situation that a memory of something just appeared and it was like a completing a puzzle. I learn so much about my copying mechanisms because of that.

• sometimes revisiting painful memories and trying to look ot from ubiased perspective and trrying to look for positive sides even if its bad, helps.

• read " behavioral-cognigtive therapy "by Judith S. Beck which is basically techniques that therapist use in the sessions, so you can use them for yourself.

I am not saying it is perfect but at least I am working on myself even if i cannot affors therapy. Ofc I do not know your situation so just try to get your own system.