On the front bumper of a Model 3? You didn't use a heat gun or a razor blade?
Do you not park your car in the sun? Your paint will get much hotter sitting in mid day summer sun than it ever would with a heat gun used during proper installation of ppf lol. And again with the razor blade. If you used a shop that cut into your paint…issue is with your choice of shop/installer and has nothing to do with the proper installation of ppf.