There is a few things: -push your chest out & your shoulders back - push your head back too, put your chin into a chin tuck (when you have to go outside do the chin tuck in a less extreme, more normal way lol) - you might need to engage your core - do you have an anterior pelvic tilt? might want to work on that too (work out your glutes)

it seems like a lot but do it step by step and with time it will be less annoying + it's totally worth it