There are several 30” on Amazon. https://www.amazon.com/s?k=built+in+microwave+ovens+30+inches+wide&crid=10EVPANWGXC15&sprefix=30%27+wide+microwave%2Caps%2C192&ref=nb_sb_ss_ts-doa-p_2_18
Get a NINJA air fryer and be happy. Chicken wings and reheated pizza will make any grumpy person happy.