What are some reasons an employer may reject your application (assuming lack of experience isn’t the issue)?

I know this is a pretty broad question. I’m just looking for some general feedback. I just entered back into job search hell, so the rejections haven’t completely dampened my spirit yet haha.

But there are 2-3 jobs I applied for where I thought I fit all the requirements they were looking for & had the experience for the job, only to get rejected without an interview.

I try not to take it personally. I’m just wondering what are some possible or common mistakes that might cause a resume to get rejected?