I AM also looking into getting listed on a few DEX's, like BISQ and there was another that I forget the name off the top of my head at the moment, but yea...
Regarding DEX IMHO you should realy contact CryptoBridge. The best way is to go to their slack channel, find and fill pinned file for coin addition and ask for guys incharged for
addition to chat with them regarding all details, they are very friendly and supportive.
https://join.slack.com/t/cryptobridge/shared_invite/MjI2OTAzNjU3MzYyLTE1MDI4MTUyNDItYzQ0OTgwMDc0YgTHAT'S RIGHT,
YOU WILL SOON BE ABLE TO PLAY GAMES AND EARN POLY, WE ARE ALSO CONSIDERING A DUAL-COIN GAME MERGE WITH XP COIN (this is still in very early stages but it is being done, we have a working game already. Yes, we are constantly busy working and adding more to our repertoire of services.
Poly will definitely have a place, use cases, and lots of fun and useful things you can do with it, in the very near future.
Thank you all for your support, we will not let you down.

...and XP COIN is already listed on CryptoBridge DEX so... one more reason to look that way.
PM if you need more info regarding CB DEX