Don’t panic, cause it sounds to me like you are panicking, but yeah I can feel the same way when yr going to school or somewhere and want to make new friends. lol.
Okay, hm, try to have a normal conversation with them, ask them how is there day going, etc, but not to much questions so u won’t bore them, if they want to still talk then u can continue on having a good flowing conversation.
Don’t get in their way if u feel like u are, so just back away from them. Don’t feel like you are going to be hated, you are not going to be hated, everything is going to be just fine. If something does go wrong, then find someone/administrator to talk to about it or just avoid the bad company.
u have a bad temper? okay, everyone has their bad temper side, and you may need to control it or you are going to get out of hand with some things lol. So just distract yourself with maybe listening to music or something.