@gosimrr bringing your question about descending here as a new topic. See below for some helpful resources of how to work on descending:
One thing to keep in mind through corners is your center of gravity. You want to lean the bike, but keep your body perpendicular to the ground:
I used the body position shown in the Cinch video last April while descending long and steep mountains and it was great. As you know, I don’t even have hills/climbs at home and therefore am not used to them, but descending was a no brainer.
Give these a try and let us know how it goes.
PS - I have disc brakes and feel more confident with them than rim brakes