Short Book Recommendations

Hi everyone, I'm just getting back into reading after quite a long break, and I've realized that starting with shorter books might be the best way to ease back into it. I don't want to get frustrated right at the beginng, if it takes ages to finisch one book. Last year i got a bit into the Booktok and Bookstagram community and i generally like the fantasy and romance aspects, but I am not really a fan of heavy smut. I am generally open when it comes the different genres, since I've also read crime stories and thrillers I really enjoyed So, are there any books under 400 pages you recommend for someone to get into reading again?