Closed apps catfishing as FOSS via Google's AI results?

I tried finding a FOSS app that I could use to use my phone as a mouse (all options for this seem really shady IMO) and Google's "AI overview" reco…

KDE Connect lets you use your phone as a mouse, among other things.
Thanks, yes, I came across it and it looks very good but the target device is an IPad so I didn’t consider it an option (well, I found no closed or open options I liked, really).
You want to use your phone as a mouse for an iPad? I don’t think iPads allow for virtual input devices, I don’t think you will have much luck.
There are actually a few closed apps that do it, some claim to make your phone discoverable as a Bluetooth HID and others via a server/client combo. But I don’t really want to have an internet enabled device being able to track all my screen interactions and control another internet enabled device without some assurance that there’s nothing nefarious going on behind the scenes.
KDE connect is amazing, I’ve used it way more than I thought I would.