I have a team of 12 year old boys and we continually have difficulty inbounding the ball after the opposition have a made basket. We have tried screening each other but that only works for awhile so we need something else. Any ideas on how to teach getting free? Thanks.

It sounds like the other team is using a full court press against your team after they make a basket, is that correct? If that's the case, you'll need to choose a press breaker, practice it until the kids can do it in their sleep and you'll have the other teams will wishing they'd never pressed you.

Some good info below. Hopefully I'm reading your question correctly.
https://www.breakthroughbasketball.com/offense/press-breaker.html