I have a Poco F3, bought it last year (for 10k Baht in a sale), specs are still good, maybe you can get it with a nice discount second hand now. No complaints with the phone, working good, fast, etc.
I just tried it, I can revoke for example the permission to make phone calls from the standard phone app, giving me a warning that this might break basic functionality of the phone, but upon confirmation it allows me to do this.