difference between playin good and hacking

hey guys

i have been playin mw2 for a while and singleplayer

and afcorse inproved my skill

always when i play good i get kicked without hacking

the host sucks,everybody says WH!!! and yeah how can i ever play good

do i need to lose all the time

and i get a good game winning kill too!! but when i watch it everything stops
and get a message ''player kicked''

any advice thanks

and i afcorse can get banned for not cheating if someone reports me!!

that would be F*CK*T up