Replacement handle + lock

Hello, I just moved into a new home with multiple casement windows (photos attached). Most of the windows have a folding handle, but 2 windows have a handle that sticks out, blocking our blinds from closing all the way. I'd like to replace these 2 with folding handles to match the rest, but unclear if I can just replace the handle or if I need to replace the cranks as well. Any advice would be appreciated. Also looking to replace one of the window locks that has a broken latch. Thanks!