Building Bug Legs Without Compunds

Hello, I (25M) started lifting from early February yo lose weight and build muscle and currently I am locked in on bodybuilding. I have always trained 4 days a week and will continue to do so because it fits my lifestyle perfectly.

Recently, I introduced Hack squats into my training program instead of leg press and absolutely loved it. However, I have gotten an exertion headache and hemorrhoids with a month of doing hack squats.

I would really like to do heavy compound leg exercises but am terrified oh having more injuries than I already got from them.

I cannot seem to find any guide on how to carefully go back to heavy compound leg exercises after hemorrhoids surgery. Thus, I would like to ask the community if I can build big legs with isolation only or if there are safe ways to do heavy compound leg exercises without worrying about hemorrhoids reappearance.