How to sell by Jawa 42?

I currently own a Jawa 42 (2020) with 8k kms on the odo. I am planning to upgrade to another bike but want to sell my Jawa 42 before that. I tried posting an ad in olx but did not find any suiters. What is the best way to sell my bike? Can I exchange it in the showroom where I am buying the new bike?