Balance insufficient

Hi
I ve got an error message. How can I top up my wallet balance with a new UTXO. Or split the existing one UTXO into several?
(BalanceInsufficientError (Expected (PlutusValue (Map [(Tuple (CurrencySymbol (hexToByteArrayUnsafe “”)) (Map [(Tuple (TokenName (hexToRawBytesUnsafe “”)) fromString “1997152”)]))]))) (Actual (PlutusValue (Map [(Tuple (CurrencySymbol (hexToByteArrayUnsafe “”)) (Map [(Tuple (TokenName (hexToRawBytesUnsafe “”)) fromString “1232660”)])),(Tuple (CurrencySymbol (hexToByteArrayUnsafe “928e34774b4408f7f2b0520b114fbf72f12d0151cd86994f371228d4”)) (Map [(Tuple (TokenName (hexToRawBytesUnsafe “556e626f6e6465645374616b696e67546f6b656e”)) fromString “1”)]))]))) (InvalidInContext (PlutusValue (Map []))))

I would like to stake my agix on Cardano; I have some Agix on my Nami wallet (cardano wallet) but when I tried to add stake amount on staking.singularynet.io, I had got an error message as above. Please could you help me?

Balanceinsufficienterror:

Check that your balance is not in one UTXO. If yes, you need to split the existing one UTXO into several.
Example: If you have one UTXO with a balance of 200 ADA and it is completely locked as a collateral, then
1.Cancel collateral in wallet settings

2.Send a transaction to yourself with the amount of 5 ADA.

This will create two UTXOs:

UTXO1 = 5ADA

UTXO2 ~ 194.8 ADA (it is slightly less than 195, because the transaction fee was paid).

3.Install Collateral - the system will take UTXO = 5ADA as Collateral.