GJ one step at a time
you'll soon be feeling much more confident and better about your self.
BTW normal people who post pictures online never show their normal resting face which is one of the reasons a lof of folk likely think "why are other people so much better looking?"
people raise their eye brow muscles, maybe puff their cheeks lightly to get rid of any cheek lines from their nose to towards their mouth etc and raise and tilt there head to one side to get a jaw bone showing.
so if your ever trying dating on an app/website you'll need to practise posing in a mirror before you take any shots or you'll just look like a weird miserable person compared to everyone else.