Be very careful with what you use. I painted my hood, before the new T/A arrived. Loved the look. But after on season of being outside and washing, I don’t like the paint. Going back to White in a couple of weeks. Sorry, can’t be of much help.
I have used Chemical Guys Matte Detailer and Spray Sealant after car washes. I used the spray wand wash and spot free rinse to wash the car with no issues. Used the Chemical guys for any water spots, fingerprints etc. and it seems to work well. Only take the car out a few times in winter but can't hand wash in our temps.
I have also purchased Dr Beasley's matte paint coating - haven't got it put on yet - again tough to do in winter. I may try the Dr. Beasley's Final Finish but hoping it is no better than Chemical Guys products. Big difference in price.
I have read to make sure the paint is not hot or in the hot sun. Seems the products will dry to fast to wipe them off and leave streaks. Did mine in the garage with Chemical Guys and no streak problems.