Just had my first crash as an adult

I’ve been riding bicycles all my life but I really started riding as a hobby/sport 2-3 years ago.
Last week my shimano 600 shifter broke so I switched to Claris brifters. Went for a test ride and during the first 2-3 km I noticed that the RD dropped from 5 to 6th cog,but not all the time. Ok, will adjust the barrel adjuster at the next red light. And then I made the mistake to watch how my RD shifts while riding down with 30km. I saw the curb and tried switching directions and braking but it was too late. I was flying over my shoulder. Good thing that I felt in the grass and got only some scratches and bruises on my shoulder and knee. The bike seems ok and I’m ok. The derailleur was adjusted and now it shifted perfectly.
I’m nut sure how bad those scratches on the rim are. I decided to go home after that. Hope I can cycle against this week.