How can I overcome my picky eating?

Hi I’m 18 and about to leave for college and I realized after getting back from a trip that my diet is ridiculous and I can’t stand to only eat like 10 foods anymore. My biggest problems are smell and texture and Im not a fan of sauce despite not really giving it a try. The way I’m eating just isn’t sustainable and I want to just eat like a normal person if anyone has any tips on how to expand my pallet and get myself to like sauces that would be awesome! I’m also autistic which contributes to my difficulties in trying new foods if that helps at all I really appreciate any advice or perspectives!