Harbor freight has these scrapers. They are stiff but a bit flexible.
Any auto parts store should have that turtle wax adhesive remover. I went to Auto zone. It’s a familiar smell and I can’t remember what it is but it’s an orange scent of another cleaner.
First scrape off top layer of film then spray, as that acts as a lubricant. Then more scraping.
You won’t scratch the paint.
I had to dig deep into YouTube to find this but man it works.