Best loan site to get money for school?

Long story short, I owe 4K in college tuition and it’s about to go to collections. From what I’ve seen going to collections will mess up my credit in the future and right now my score is pretty good (780s). So I was thinking of taking out a private loan to pay off the school and make payment plans with the loan agency. I never took out a loan so any tips would also be very helpful, thank you!