I really really struggle with it too, luckily my partner is a writer and reads fiction pretty voraciously. If you can reach out to a friend who reads a lot of fiction and they know you well, they may be able to point you in a good direction. Otherwise, I’m a fan of just going all out, as weird or shocking as possible, to help hold your attention. My partner had me read Blood and Guts in High School by Kathy Acker and it really opened up fiction for me again after years of not being interested.