Can someone explain teams to me?

I know in most racing there are teams of riders/drivers that work together but how exactly?Isn’t the end goal to win independently? So what is the purpose of these teams?Thanks for any answers you guys have, obviously I know nothing about moto gp but have always wondered!
Submitted October 12, 2018 at 05:38AM by Sooder73 https://www.reddit.com/r/motogp/comments/9nha7e/can_someone_explain_teams_to_me/?utm_source=ifttt