Try using a PS4 controller. The touchpad works as a mouse.

I’d also recommend getting a wireless keyboard + mouse combo.

There should be a software solution to this.

I’m partly to blame for this.

I have telemetry turned on and recently switched to Wayland. They’re looking at the data and decided me switching was the final straw.

iCloud shit is only ‘convenient and beginner friendly’ because you’re paying someone else to do all the work and maintenance for you.