Is it good for games like Fortnite, Minecraft, etc. (games with high sensitivity)?
Nope one should not buy such PC's
Not sure, but it's good for a writing program.
All the graphics card does not even meet the minimum requirements of Fortnite. Nope, that's a better office PC for 2D applications and a little bit of online flash gaming.
To make a long story short: no! From 500 euro there's something decent:
If you're looking for an office PC, maybe that's what.
If you want something to play for 300 euro, use a console.