How much RAM laptop

How much memory should you use for games like Minecraft and videos / streams?

16 GB.

If you want to save money and don't plan to play big modpacks, 8 GB should be enough.

I personally have 8gb and can run Osu, Binding of Isaac, Bullet Hell and Streams without any problems.

So it should be 8. So I can play it well with me. But if you want to buy a gaming laptop, it should already have 16

Should already have at least 10 GB

Absolutely 16

8 would be too short if we assume that you are using Windows 10 and not only want to do one thing but want to be multitasking

Not really at 8 you shoot yourself in the knee because otherwise you can hardly do 2 things at the same time

Gaming and laptop are not a contradiction in terms
It's like lead aircraft