

Glad you’ve got Mullvad! It’s the best VPN imo.
I haven’t tried buying a phone number anonymously in a long time and the last time I tried it no longer worked for fooling Google, so unfortunately I won’t be super helpful there. But I do know it ia theoretically possible. It’s basically a VOIP provider that is verified to work with Google. Payment anonymously (like with cash) is probably the hardest part. If you go that route I would recommend using something other than a phone number for 2FA, like a yubikey or open source authenticator app, so that if Google eventually says, “we don’t accept this number anymore” you have a chance to log in. Sorry for being less helpful on this question!
Proton is theoretically better than Google for email. IMO email is inherently insecure as a technology and due to the domination from the big providers that will blacklist you for “spam” if you don’t jump through their hoops, which lractically necessitates paying a company to send your emails. The “best” setup that uses that third party and does not use GPG is to buy a domain, self-host your own inbox so that received email goes only to you, and and pay the third party just to send outgoing messages - which should be assumed to be insecure. In theory the best option is to run everything yourself with a domain purchased under a fake name with an anonymous paymeny method (which I haven’t personally tried yet) and being very on top of things so your sent mail doesn’t get marked as spam. And to encryot all your messages via GPG. But at that point of security concer , for most purposes I would just not use email at all and instead use something more inherently secure, ideally in-person conversations. Element and Matrix are better buy their funding model raises red flags so it is jusy something to regularly audit and understand. Avoid the habit of being too candid because you trust the software to protect you!
Linux is great and will help with getting more comfortable with digial security, so that’s a good thing to keep trying at! It has a learning curve so don’t get discouraged when things break the first few times.
An IRA just has tax benefits if you don’t cash it in before retirement age. It’s still basically just stock market gambling, you have to invest it in something (even just an index fund) for it to be worthwhile. If you have a 401(k) from a company and then leave that company it is better to convert it to a Roth IRA.
Individual financial planning is basically hedging your bets regarding larger trends that are not in your individual control.
Owning a house outright protects you from foreclosure if times get tough so if you are being conservative you might get a mortgage for a modest home and pay it off ASAP even if “on average” you would have made more money by paying it off slower and investing instead. Obviously simply choosing to have a mortgage isn’t realistic for many people, housing prices are increasing much faster than wages, so this is a good example of bet-hedging subject to wider economic conditions over which you don’t, as an individual, have control.
Keeping a good stock of dried rice and beans is a good way to hedge against massive food price increases and gives you the opportunity to isolate for months in case of emergency.
Stable-ish assets are a good hedge against inflation. They appreciate with inflation and can be exchanged for a train or plane ticket or a car if you need to flee. A common example is gold. Gold is silly as a hyperfocused investment strategy but as something you can always trade in fot cash it is useful. Real estate is also good for this, though obviously personal morality on land ownership (and what you do with it) comes into play. Having a small plot of land in an inexpensive area can be in the cards for many. It’s cheaper than a house. Note that taxes might eat up any expectation of this being better than leaving money in a bank account. Like gold this is an inflation hedge that will probably yield less money than an index fund.
Finally, I recommend joining an org and organizing. I’ve described individual actions and these are good, but communal are better. A mutual aid food bank is more efficient than a bag of beans in a pantry and will keep you plugged in. It also is a way to actually build against the systems of deprivation, as orgs can challenge them via direct action - ideally communist orgs.