Take a look at Slimbook, I’ve had one for many years and very happy.

Strange Horticulture.

I expected some entertaining puzzles for an afternoon, but I really liked everything about it.

Did you try La Biblioteca Secreta?

http://bibliotecasecreta.nl/

What about installing some antivirus than can scan on demand?

I don’t know how’s the “market” right now, but a few years ago Malwarebytes was good for Windows, and ClamAV in Linux

https://nobsgames.stavros.io/android/?name=&genre=&rating__gt=&price=free

This is a list of some interesting games, you can filter by genre, price and rating.

By myself, I’m playing The Witcher 3, bought it on GOG with the 2 DLCs for 10€, and it was one of my best buys.

I’m also playing Risk of Rain 2 and Hammerwatch with some friends.