m.youtube.com/playlist?list=PLR_ghQEN2SgB5ZpiIIzl…

TheHatedOne on YT has some good resources

You can also find degoogle lists with alternatives for each app, e.g. here: git.tycrek.com/archive/degoogle

My advice to you is to take one step at a time, explore at your own pace. It’s easy to get overwhelmed, but IMO each step is beneficial on its own. E.g. instead of moving to Proton.me in one night (or any other email provider), first start by forwarding the emails and see if youre5ok with the product