The native tokens of Polygon ( Matic ) blockchain is Matic and Matic-ERC20.
To do most things on Polygon, you will need to pay gas, in Matic.
You will also need the Matic-ERC20 version of any token you want to trade, stake etc. on PolyDEX.
You can go a few ways about porting your tokens to Matic.
Please refer the following links. They are equipped with all the information you need. Remember, knowledge is important. Invest few hours in undertstanding the basics. It will make your crypto journey pleasant and more secure.
Guide to using the Matic Bridge to bridge tokens from Ethereum to Polygon (Matic Network)