If you have Crypto.com account you can easily top up your Funrise wallet with $USDC$ USDC (Polygon) via Crypto.com application.
If you don't have $USDC$ USDC at your account you will need to convert it from other cryptocurrency or to buy it. To buy within the app tap at Trade - Buy - $USDC$ USDC - and choose preferred payment method.
Let's walk through the withdrawal process in details.
At Home page tap at Transfer
Tap at Withdraw
Tap at Crypto
Tap at External Wallet
Tap at + icon at the upper right corner to add new wallet address
Select USD Coin
Select Polygon network, add Funrise wallet address and wallet name
At withdrawal whitelist choose added on previous step wallet address by taping Withdraw USDC
Type withdrawal amount and tap at Withdraw
Paste 6 digital verification code
And submit transaction.
Congrats, let's go Funrise!