I bought this tension-based pullup bar last year during COVID and it's served me well! A bit annoying to set up and take down but super simple. It's great because you can set it to whatever height you want, so you can do things from muscle-ups to Australian pullups.

https://smile.amazon.com/gp/product/B07L6F6JG7/ref=ppx_yo_dt_b_asin_title_o04_s01?ie=UTF8&psc=1