I have done about everything I can think of to get my well to pump right but its still losing pressure, how would I check my lines to see if they are sucking air?

I will assume the pump is not submersible. Might be leaking foot valve.

What do you mean when you say it is losing pressure? Do you mean it loses pressure when the pump is not running and water is not being used? If so, then has to be a leak somewhere. Could be footvalve, wellpipe, or between the well and the house, or even a leaking toilet valve.