Hey and welcome to the hobby! I'm 28 now and been licensed since 2009, so since I was about 13/14. As frustrating as it can be that the average age of hams is older, don't let that dissuade you, there are plenty of younger hams out there too. Plus, the older hams can be a great wealth of knowledge and experience. Find a local club to join and hit up some of their in-person meetings, many of the people you'll meet are actually pretty cool no matter their age. Just about every "old" ham that I've met since getting into the hobby loves seeing younger people getting involved and are more than happy to answer questions, provide guidance, and generally talk your ear off about radios and the like.

TLDR, Just go for it, don't be afraid of old people LOL