I think it is true that you are able to trade without indicators. You have gain experience over the past 2 years and you actually gain knowledge by studying trading.
Sometimes the success associated with luck too so trading is like gambling done with some basic level knowledge.So if still people can make profits without any indicators then may not be doing trading as the profession just from their understanding and part time job to make some profits.Use indicators and understand the market well and decide what we need to next.