I’m using Motion Eye OS with mine, it has built in support for Pimoroni’s Pan Tilt Hat. It is a bit tricky setting it up but once done I have action buttons to control the Pan tilt.
It was a bit of a struggle first time through, but I now have just the one script I can clip and past into Putty and do it all with one enter. I can post my script if your interested.
I have a couple of presets and manual movement buttons.
Pan Tilt Hat Motion Eye OS action buttons - Support - Pimoroni Buccaneers