I didn’t use a pick for all my time in bands, 10 + years and then another 15 after that, eventually wanted to get some of that tone you can only get from a pick or nail. It’s taken me a while to get comfortable with it and I’m still in practice mode with a pick.
It helps if you can try different sizes, thicknesses and material picks and find what suits you. Or, just get used to the first one you find and persevere. All I can say is don’t grip it too tightly.