Injector loose?

Last Friday, when i was driving home i realize i had a fuel leak and then my car started misfiring and check engine light pop up. I got my car tow home. I start taking stuff apart.
1st issue i found my Fuel line from fuel rail to injector had crack.
2nd issue the bracket that hold the injector in place is broken.
After removing the E10 bolt that was holding the bracket, i realizing that my injector on 2nd cylinder have alot of play in it. So i removed injector 1 from cylinder 1 to cylinder 2 and injector 2 to cylinder 1. ** I thought might have a bad port on the head for the fuel injector** so injector 1 in cylinder 2 was snuggy and injector 2 was still loose in both cylinder. So my question to you guys is it the o ring seal that is bad or the decoupling element on injector 2?

Thanks i hope to get some feed back here.

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Injector loose?