Bybit is one of those exchanges that don't offer a huge variety of different products and options. In fact, originally, they only offered Bitcoin leveraged derivatives trading and nothing else. You're probably thinking, well, what makes them so special then?
First of all, sometimes simplicity provides for the most optimal user experience. Bybit is an exchange largely focused on daytraders and swing traders, but is available to all and can be a great device for even beginners if they have a clear cut strategy.
Of course as of now, Bybit has largely expanded their product range, but the simplicity of their website and the ease of use is still clear as day. The interface is beautifully functional and Bybit itself doesn't hassle you with account freezes, KYC, etc., allowing their products to be available to anyone.
On top of this, Bybit has great marketing, often offering large bonuses for those willing to try the exchange and those who actively interact with Bybit. They are constantly working to improve user experience and I believe they are doing an excellent job - not to mention that Bybit likely offers some of the best liquidity available in crypto.