You have to use the card as normal. You can withdraw upto 1000 per day with some cards but normally after the second withdrawal they block the card. If you do one o a monday and one on a Friday and plenty of normal transactions ie shopping, petrol, restaurants, pubs and utility bill's then it's not such a red flag.
Other option is to set up as many EMI's as possible and withdraw from a card every day.
Mainstream banks wont trouble you so long as Crypto is not your only income but to open an account they will credit check you and you will be required to visit the branch to open.