Vintage Peugeot conversion help and tips please

ive just resprayed my 30yr old raleigh and the paint is quite weak and easily chipped, even tho i have applied 3 coats of clear laquer, does anyone have any experience of how tough powder coating is or perhaps 3M paint protection film?

DIY paintjobs are very hard to get tough, best you can do is get allll of the origanal paint off, use good primer, not to many coats of the colour, no need to do that thick, then do more like 5 or 6 layers of laquer but do thin ones, paint to thick will chip easier
i could be wrong but just personal exsperience from painting alot of bikes and other things over a few years, what works best for me

but ye powder coating will defonetly be tougher...