#1
Quickswap:(https://quickswap.exchange)
fast cheap and has sufficient liquidity to convert your tokens.
#2
aave:(https://app.aave.com/)
aave is a popular money market maker on eth which is available on polygon now.
#3 Koge farm:(https://kogefarm.io/vaults)
if you are looking for an auto compounding vault on polygon this would be the best with the cheapest fee and at optimal compounding rates.