Any fork under $500 is a cheap POS and barely worth riding. If your suspension fork is less than that you might as well toss it and go full rigid as it will be lighter and last longer and probably even ride better.

There you go. Literally first result on Amazon after typing "fat tire fork". Dual crown and it actually has an air spring.
https://www.amazon.com/BOLANY-Suspension-Mountain-Shoulder-Rappelling/dp/B09MQBZFFW/ref=sr_1_5?crid=2B314WOXPKXM4&keywords=fat+bike+fork&qid=1683384331&sprefix=fat+bike+fork%2Caps%2C105&sr=8-5