It seems like a freebie answer maybe but I genuinely do believe it's whatever you choose. Life is what you make it.
For me that purpose is trying to bring a bit of joy to those around me, spread a little knowledge, and help people live their best lives while trying to grow as a person. Keep learning, keep teaching, and make sure the brief time I spent on this planet had some kind of positive impact, even if I'm quickly forgotten.
Doesn't need to be deeper than that for me, and I don't need to necessarily be the best at doing whatever I do to be able to be content in it.