If your main usecase is accessing Home Assistant or exposing a few HTTP endpoints from your home network, you're maybe stuck under several NATs and you don't mind Cloudflare, then I can't not recommend Cloudflare Tunnel. You just run their app on your home server, set up forwarding as if you were setting up nginx or something, click a few buttons in their GUI and your home stuff is online, on HTTPS, with DDoS protection and a nice dashboard. And you'll likely easily fit into the free tier.
If you have the same usecase but DO mind Cloudflare, you can rent a cheap server and use SSH reverse TCP tunneling (ssh -R 8080:localhost:80 proxy@example.com)
Do you have any security cameras configured in Home assistant showing a live feed? Reason I'm asking - it seems that CF has some clauses in their TOS that forbids anything but static content. So audio/video stream is a no-no. I'm also using CF tunnel. Just not for home assistant because of their restrictions. For HASS, I go through tailscale.
