I personally recommend Cloudflare, its easy to set up

Well, if you have an old laptop or computer laying around, its free. It should not be very resource intensive if you’re only using it for yourself.

But you do need a domain name if i remember correctly, which is about 10-20$ a year.

Edit: Heres the link for the install guide. https://join-lemmy.org/docs/administration/install_docker.html

Well, if its too slow, you can just self-host it.