For exchanges where you can start your cryptocurrency day trading or swing trading, there are so many exchanges out there that you can make use of that are quite reliable. Coinbase.com and other one you mentioned (Swan Bitcoin, which I’ve never heard of) seems to be the only ones you know.

There is also Binance.com which has a lower fees for trading, it has one of the best fees you’re going to find in the market. There are other good exchanges as well such as Crypto.com, and Kraken. Maybe you should check them out and know which would fit your needs exactly and you can then start making use of it.