Yes, Google even read your mails, it's sooo private. Its right that Google offers good services respect quality, but its a privacy nightmare and nowadays there are very good alternatives out there, even when they are also propietary. Eg, YT is maybe the best streaming platform, but full of ads, clickbaits, tracking and other crap, now even blocks videos if you use some adblockers. Because of this a lot of people translade subscriptions and playlists to Odysee, also privacy but way better respect privacy and few ads (online service of IMDB)

Discord is certainly not the best but also not the worse (see Reddit, X, Fakebook, WhatsCrap, etc), but offers a lot of features which other platforms don't have.

Privacy in internet finish when you go online, the user can only patch the worst leaks more or less succesfull, beginning with the worst privacy and security hole, himself. Read the TOS and PP of an soft or service you want to use, check the sites with Blacklight, Webkoll, UrlVoid, Exodus Privacy, AV or similar, even if it is FOSS, which no neccesarly is a security or privacy feature, tracking APIs from Google, Amazon, Facebook and M$ are also FOSS and included in a lot of FOSS in this Microsoft site called GitHub.

You don't need a tin foil hat, but common sense in the internet.