We farm tf2 contracts

You can only complete contracts in casual and since you cant change teams and playing in Squad will get you and your friend in the same team farming contracts may be hard. The best way to get in the same server with your friends but stay in diffrent teams is too queue for a single map form a unpopular game mode (like hydro). When a game mode is rarely played there's a bigger chance of getting in the same server without being in a Squad with your friend. After you find a game you just need to make sure to get into diffrent teams which might not work out so you'll have to try again but with a few people its almost granted some of you will be put into diffrent teams.

If something is unclear or you dont understand let me know in the comments