Weight causing tires to rub inside of trailer

My main concern is why the tires are shifted more to one side than the other. I looked at the tires I replaced the other day and I didn't see any real uneven wear between 3 of them. The blowout was a mess so I couldn't really gauge it. But just looking at the wheels you can tell the two on the good side have atleast an inch or more of clearance than the bad side. Im going to my friends shop on Sunday so he can look at everything and get a parts list together. It will probably be the following weekend before we knock it out but I'll get plenty of pics for sure of the whole process. I plan to go over everything with a good eye to look for any other issues. Thanks for the alignment link but that is way over my head. There are a few places close to me that do alignments on TT/TH so I'll break down and pay for that LOL.

Thanks again everyone for helping me with this. Without your knowledge and contributions I wouldn't know where to start with this whole deal. Me and my family really love the trailer and its paid for so I want to do whatever I can to save it and make it last for as long as I can