TeddyParadise

Thanks for the tips

Excellent. Thank you!

It looks good, but my device is unsupported.

Thanks. By 'ask directly' I'm assuming you mean here and not by DM - if not, my apologies. Yes, I started using F-droid some time ago. I had hoped to root my handset , but it seems tricky to do the one I have. I think I heard somewhere that there's an app (possibly several) that tests your phone for info leakage.

No. Just need to know how truly secure certain apps are like Telegram etc.

Cool. Thank you!

It's a big ask to be sure. Thanks so much for the comprehensive answer :)