I never regret about it nor should you. Its pointless to regret the missed opportunities instead of focusing on possibilities that the future brings to you. Its never too late to enter the crypto market and make a profit. Earlier joining crypto trading is not a guarantee of success. You started with the right way because knowledge and skills is a key to successful trading. When I started to trade I met the problem of finding a good platform. I tried many of them and stopped on CEX. Because it allows both crypto to fiat trading
https://cex.io/btc-eur and crypto to crypto trading.