Hello, I would like to suggest Bybit broker. Your entire Bybit balance is stored securely in cold storage. The site claims that in the event of a hack, Bybit will fully reimburse the client for damages. I advise you to read the information about the commissions of the bybit exchange fees if you want to learn more about the qualities of the broker https://tradersunion.com/brokers/crypto/view/bybit/bybit-fees/