Is the custom rom scene still alive ? Thinking of buying a new phone urgently and have limited budget of upto 25k₹ INR, my options seem poco, redmi, realme and i hate their OS

I was planning on upgrading to a flagship but my s21 fe has decided to f everything up and i need to sidegrade , I dont like motorola, vivo, one plus or oppo so these are out of my consideration, i am limiting my search to poco,redmi and realme but i hate the OS ... what can i do?