Have fun, keep it clean and treat other players with respect.

I don't accept friend requests from anybody that I don't know personally, so do not bother. My items are not up for trade, they are my favorite play skins. So don't bother to send me offers, I'm just not interested.

I only play DM and Arms Race. CS:GO competitive is a TEAM game, and playing with random people seldom is gratifying, so I quit that modality all together years ago and only play modalities in which I am not dependent on the skills and game sense of my team mates.