I’m worried about my age affecting my ability to find a carrier in marketing.

I’m 28M I’m gonna be 29 in a few weeks. And I work at a restaurant. As a dishwasher I plan to go into marketing or Public relations. But in many ways like digital marketing I know they can not legally discriminate against me based on age. But from research I have done I’m worried I may face age bais even though I’m technically in my prime time I feel like there’s gonna be a massive uphill battle. And I’m worried that even if I do get into the feild I might never get that far to a position were I’d make 6 figures. I have an associates degree in Communications and I plan to go back to get my Bachelors. But I sometimes worry that I’ve hit a point we’re I’m gonna be lower on the list of people to hire in the business field, Because of the time that’s passed.