You do not! You can use volume down as a Ctrl key, and volume up also unlocks other keys (volume up + wasd for example gives you arrows.) It also gives you an extra row above the touch keyboard with escape, tab, and some other keys, and a text input for pasting/IME/swiping/etc.

And even if that sounds uncomfortable there's still plenty of useful things you can do with minimal typing! For example... You could run Tailscale as a normal Android app, then use SSH forwarding in Termux to get a local port that goes to a web server on another computer in your tailnet, and browse to that locally on the phone using Fennec F-Droid (Firefox). All of that works just fine. If I leave one of my computers on and I'm in bed or away from home I can ssh in and run systemctl suspend. Wayland/X server locked up? You can use your magic sysrq keys of course, OR you can ssh in with termux and kill it, which doesn't depend on magic sysrq being enabled (or remembering how to get it on your keyboard.) You could also run yt-dlp to download some video or audio content from the internet; everyone hates the Reddit video player, so why not just get the MP4 out of it? Admittedly, there's a better solution here: you can get an app called Seal on F-Droid which is a pretty good yt-dlp frontend. But, the fact that you can easily do it in Termux using their package manager is testament to just how useful Termux is.

I honestly only want one thing; an SSH Agent implementation built into the app, so I can import SSH keys and not have to enter the passphrase constantly. Not a huge deal really, but having a built-in agent would be super convenient.