Movie one could fit before the raditz saga.
Movei two and three could take place before the saiyans came, but goku's there. so it would be mesed up. can't take place anywhere.
four: Before Namek???? Yes it could. but Piccolo is there. so nope.
movie five: This Can work. It's after freezer saga, and after Trunk's leave.
Movie six: why isn't Gohan not a SS???? And Dende is stil there and Piccolo is weaker than the ss. Didn't they get dende to be gaurdian because kami fused with picolo????? Or Goku and Vegeta fought MC as Ul;tra Saiyans???????? and Gohan was too lazy to go SS????/ Yep, vegeta and goku were fighting MC as Ultra Super Saiyans.
movie 7: Could work.. 13, 14 and 15 were to cause a distraction for gero to realease the real andriods 17 and 18. Before Cell?????
movie eight: Before cell games. Gohan was FP SS and so was Goku. Could work.
Movie ten: It is before the buu saga, took place in the seven years.
movie 11: same but with Trunks, goten, Satan and 18.
movie 12: It could only be after the Kid buu saga, but Pikon and Goku at the begining kinda screws everything
movie 13#: could work after the kid buu saga.