In order to use Singular.farm(Matic), you'll need to send some assets onto the Polygon blockchain. This process is called bridging. Depending on the originating blockchain, the bridge you use will differ.
Exchanges Supporting Matic Deposit and Withdrawal.
Note that xPollinate is an unofficial bridge, but many community members have successfully used it to bridge funds.
There is an unofficial BSC/xDAI to Polygon bridge, by xPollinate. A small fee is charged for using this service, which will be detailed for you before accepting the transfer.
Supported tokens for bridging:
During busy times, the Polygon MATIC exit liquidity on xPollinate may be insufficient for your desired amount. Keep refreshing xPollinate's homepage every so often, to check when there is enough liquidity for your transaction!
Bridging from Elsewhere
Bridging from other blockchains is currently unsupported, do so at your own risk!
Polygon MATIC Faucets
If for one reason or another, you find yourself out of MATIC for gas, you can always use one of the MATIC faucets to help you out.