If you are interested in how the crypto exchange works, then hardly anyone will give you an answer. This is a very complex mechanism. You need to have a huge budget to launch a similar project. Need a huge staff. We need connections in the crypto industry and with government bodies. In general, crypto exchange is a very serious business!
Now there is so much competition in the crypto exchange market that I would not advise anyone to launch such a startup.
Yes, there are a lot of competitors, I completely agree with you, but you still need to be careful and always follow the trends