We tried the online but it was not for us mostly because I'm feel like a terrible DM online and not confident about by tech skills. All of my players are far more tech savvy than me.
We were fortunate in that one of my groups returned quickly to tabletop playing (by November-December 2020) and that game flourished while our weekly online game game suffered until end of last year when that too returned to tabletop.
As for parting with rpg books, I haven't done it, not that I have a lot, but I do want to get rid of my 4e books as I hardly refer to them. But every time I get close to making that decision, I page through and find something useful. I'm a hoarder. The pain is real.