Best crypto broker- first time

Hi all,

I’m very interested in buying dogecoin for the first time. I’ve been trying to research the apps Kraken vs. Coinbase or Robinhood. I’m considering trading $150 to $200 as a start since I’m brand new to the crypto market.

Which app (Kraken/Coinbase/Robinhood) is best for BTC and DOGE, has the least fees, and best user interface for beginners?

Any input is appreciated!!!!!