probably could fit into fly.io free tier. also as others have mentioned - oracle oci provides a nice free vm, which can be shut off if usage of resources is low, but you can workaround it by increasing a volume a bit more than free tier allows and pay something like a 1-2$ for it monthly.
using mostly operator from percona for kubernetes, sometimes just a simple deployment. Running postgresql for Lemmy from docker-compose as a container.
my fav is https://www.snipd.com/