Hi there, as someone who is writing his master thesis on the privacy of fee vpns. I cannot recommend a single one. By that I mean the ones that advertise themselves as being a mainly free vpn. I have not had a look at privado in specific, but would highly recommend sticking to Proton. Their vpn is also fairly priced if you ask me.

Addtionally, if you want to quickly check out an app to see if they use excessive amounts of permissions(based on manifest file), and the implemented trackers they have you can use Exodus Privacy Tool; https://reports.exodus-privacy.eu.org/en/reports/io.privado.android/latest/

Being free always raises the question of what they are getting out of you using it. I wouldn’t be entirely comfortable using it.

With no cash your only way to torrent for free safely is i2p and it’s slower speeds

you could look into other ways of pirating, that don’t necessarily require a vpn, instead. in may country it’s mainly problematic to use torrents, because you automatically are sharing stuff as well. IRC is something that I never had a problem with, for example. you’re only downloading and it doesn’t cost you anything. there are xdcc search engines out there. The downsides are that it’s a bit nerdy (is it a downside. though?) and you’ll mostly find current mainstream content.