Hi there
You can solve your ping problem by closing the programs that eat your internet in the background.
For example, Chrome consumes a lot of internet. If you are using applications such as Discoder Teamspeak3, I recommend turning it off while playing games.
You can also find out your speed test sanction internet status.
In cases where you exceed your fair quota, you may experience ping problems.
2. I think the high ping in the game is related to the density of the servers.