Each in its own way attaches importance to the phrase successful trader and depends on the level of his usual income, daily needs, I assume that the increase in its capital monthly by 10-15% is already considered a success!
10-15% if it can be stable and sustainable I think it can be used as success for traders. imagine if the trader uses $ 50,000 of capital and gets 10-15% profit every month isn't that a good thing isn't it