Sell ​​concert tickets?

Hiii

I bought tickets for the October concert at the beginning of the year, but unfortunately, I can't go to the concert now. I'd like to sell them because they weren't cheap, but I don't know how. How do I find people who are interested, and if I do find some, how does that work? (The tickets are personalized with my name.)

Maybe someone has already had experience with this. I would really appreciate some help :))