We know WhatsApp uses the Signal protocol for encryption, but it also collects a lot of metadata. Arguably still better than Telegram that collects everything. Its secret chats may be e2ee but nobody uses them even for discussing sensitive matters, and they don’t work on the Desktop.
I haven’t played it yet. I prioritize Game Pass, since those games come and go, but on Steam the library is semi-permanent. Sometimes I really feel like playing a particular game from my library, so I prioritize that over the ones I like on Game Pass.