These are some wallets that support opt-in RBF: Bitcoin open source wallets that support replace-by-fee (RBF)

If you are not a full mode runner, I will advice you to use any of the wallets on the above link.

I have used Electrum, Sparrow and Bluewallet. They are reputed and open source.

If you are a full jide runner, you can enable full RBF. Although, SPV wallets that look for nodes that support it should be able to double spend unconfirmed transaction with high fee also even if it does not support opt-in RBF.

What BlackHatCoiner meant is that a transaction that is nit confirmed can be double spent.

A transaction can be confirmed within some seconds and it may take some minutes. It depends on the time you make the transaction, the fee rate that you used and the time the next block is mined.