With one exception, all of my machines have 8GB or less, and I use a Firefox-based browser on desktop (Goigle deliberately slows down their services on non-Chrome browsers). Also, YouTube does have server-side tracking, and I need to be able to manage my subscriptions. I could use RSS, but I already have a reader installed for news and I don’t want it getting cluttered.
uBlock and Mullvad is a great combo, and I am known to use the main site if both Invidious and yt-dlp aren’t working; but the fact remains that Invidious is the inherently more private option.
Mullvad VPN if you’re prepared to pay; ProtonVPN or Windscribe if you aren’t.
None of the services keep logs or require any personal info.