If you’re asking this you should probably use one to be more safe if you’re exposing stuff to the web, there are other ways of doing it including just VPNing into your home network or using a VPS or cloudflare tunnels, but using a reverse proxy manager in combo with cloudflare DNS is a good place to start and is probably good enough if you use good enough security with it: long unique passwords, two factor, security keys, etc.
If you’re asking this you should probably use one to be more safe if you’re exposing stuff to the web, there are other ways of doing it including just VPNing into your home network or using a VPS or cloudflare tunnels, but using a reverse proxy manager in combo with cloudflare DNS is a good place to start and is probably good enough if you use good enough security with it: long unique passwords, two factor, security keys, etc.