If you plan on using crypto.com its better to use your credit card to fund it and pay the %7 fee on your credit card.

The app doesn't takes a minimum of 0.5 BTC if you want to earn interest on your deposit. You will need to pay their fee and the network fee to use the service. They are a for-profit company

BTC transfer fee at the moment is anything between 0.24 USD to 0.65 USD