I've ran multiple containers on a Pi 3 before "upgrading" to a Pi 4. Yes not even a Pi 5. Sure it's not rapid and drags it's heels at times but for the most part it's great for hosting stuff for my household.
Home assistant, Plex, Syncthing, Wireguard, Ad Guard, nginx, nginx proxy manager, duckdns, mongodb and unifi network appliance. I was also running Jellyfin along side Plex but it keeps causing the Pi to lock up.