to find you style go to pinterest and look at street style for fashion weeks across the world, then you can go and search different shops like Urban outfitters, new look, h and m, yestyle, shein, and find which has the most of the stuff that interests you or that you relate with etc. Make sure you dont wear block colours or leggings !
Also on youtube there are some videos, like find my aesthetic, they are super fun to watch and will help you find which style you enjoy such as:
Hope you find you style well before summer is over, oh and dont forget that to use your style through the year simply add layers to your summer outfits, like turtlenecks or long sleeved undershirts, coats, and other thicker outerwear so you can stay popping even in cold weather !!