Who can help me please

Hello, I hope someone can help me or give me advice.
MY PC
Asus Z390 I5 9400 F 2.900 GHZ 16 GB
Geforce 1050 TI
Ehternet 50 mbits (1und 1) Fritzbox 7590
Monitor Acer Predator XB253QGP

Had a few questions now.
1.come from Germany how does the connection to the servers behave
2.Windows 10 Pro is that bad?
3.Which internet router would be the best
4.Which graphics settings should I use
5.Which Steam settings should I use
5.What do I have to configure in Windows
6.Randoms 4vs4 I play with Chinese in a team I lose if I have them as an opponent why?
7.How or what would I have to enter 7590 in the router so that the internet would be better ?
8.Ping Box 1ms Ping steam 20 ms Ping Amazonaws.com 120 ms
9.Average FPS according to Steam 90


Now to the problem of why I am asking
Somehow I don't hit the opponent properly, that means I can't destroy units like pioneers against pioneers even though I'm behind sandbags. I can run after tanks with engine damage but have no chance to catch up, why who is it the other way around so my tank has engine damage and I drive backwards the enemy can catch up with me. About twich I see players to e.g. Strumpanther and there it is so that they have a lot more speed with the tanks and units they move faster how can that be. My Artys hit a shitty 100 times shoot 1 time a hit but the enemy only shoots with the arty and every shot a hit. Please no learning to play now, I have 5000 hours of play time. Even if I play with Treeduation -OV1 -Tarrats in the team or so I think that I do the game for whatever reason with mine Internet line or whatever. So we have delays in there and then lose. I hope someone can say something about this LG.