Indeed, cleaning such frames is difficult. You must be careful with it. Aluminum is really very soft and susceptible to corrosion damage. When I was cleaning an aluminum door, I had such a situation that I step strong on it, and it was damaged. The lock couldn't work normally, so I had to order another one. I found some accessible variants on
https://www.howtobecomealocksmith.org/lock-pick-guns/, and installed them outside so the back door could be closed at night. More than that, streaks from aggressive chemicals remain on this material, and it does not look aesthetically pleasing