CSGO bug

Hey guys. I'm having a problem... When I start the game and go on any server or competitive I cant switch to Pistol (by pressing 2) while walking I need to stop switch to pistol and then start walking again. I also can't crouchwalk. This Is really annoying . Tried re-installing the game didnt help.

In the options, go to keyboard and press the reset keys button. If this fails to solve your problems, then
try typing "unbind all" in console, and go through the pain of resetting all of the buttons manually. I don't know what to do if both of those don't work.

I think its the anthighosting thing and I might have to buy a new keyboard