Although it is one of the earliest crypto exchanges, the Gemini exchange has not expanded as aggressively or quickly as its main rivals - but this seems entirely by design. Gemini markets itself as an institutional gateway, and much of its operations, including its exchange, target these investors. However, that's not to say that the Gemini exchange is not suitable for beginners because it is. It takes a simple, streamlined approach to coin trading that anyone could use.
Yet it does not have as wide a variety of coin pairings, it does not have the vast array of financial products that Binance or FTX does, and the fixed fees are very high for anyone enacting any high-frequency trading strategy.
However, FDIC insures deposits up to $250,000, definitely has a 'regulation-first' approach, and is the US exchange that seems most business-minded. Gemini is an excellent choice for a casual but serious investor if it has the coin pairings you want.
Deposit/trade crypto ( https://www.gemini.com/blog/helpful-tips-to-understand-geminis-kyc-and-onboarding-process )