Recommendation - New lenses for a x-t30ii

Recently I acquired a 15-45 lens and I’ve been having mixed feelings about with the optic zoom and the fact I’m not used to zoom lenses. It kinda “traps” me while I’m taking some photos by worrying more about the zoom rather the quality itself of the photo… I shoot normally street photography, some portraits and landscapes while traveling and specially with a 50mm 1.8 zuiko lens in my Olympus om2n. For the Fuji I was seeking something under 50 mm (felt incredible taking portraits but sometimes it was too restrict) and nothing less than 23mm (I had a hard time catching the feelings and taking portraits with this lenses). Do you recommend anything in between? I was thinking in case I will need to take a portrait I still can use the 50mm zuiko in the Fuji…

Thanks a lot for your recommendations :)