Selling ERC20 token for ETH?

Is there a way with Moralis to sell an ERC20 token you have created for ETH?

I have created an app which uses an ERC20 token I have created, and I was just wondering if there was a way a user could then sell this token for ETH since they bought the token for ETH in the first place?

if so, is there any material on it to help build that function?

If you add that token in a liquidity pool then users can buy or sell tokens there, or add to the liquidity pool.