Automatische Updates gehen in Mint schon lange, siehe zB hier.
Was man ex-Windows Leuten sonst noch sagen sollte, ist wie man Software installiert - über die Anwendungsverwaltung und nicht über irgendwelche Links im Web.
You are not giving them your details. Heroic Games Launcher is open source, you can verify their explanations in the FAQ:
"Does Heroic collect my data, username, or password?
No, Heroic is a privacy-centered application and does not collect any data from your computer or device. It does not collect your username, password, or any other personal information. You will login on the official Epic Games Store or GOG website and then Heroic will keep only a token that serves only to list, download and to launch games from those stores."
I've played Control using Heroic and it worked great.
Subnautica works for me on days like these. It's atmosphere, the clever design of how to explore more of the story and the constant danger. I also really like the ending, but I won't say more about that, cause spoilers.
Oh that's what you were looking for. Well, you can do that with one click like this: Go to a search engine you want to add, right click anywhere in the address bar, then you get that green +button to add it. Does that work for you?
I'm enjoying it very much, thank you.