This is a good thread as it may put some expectations in-line with reality. Personally, I'd consider anything above 20% per anno (non-compounded average, not Warren Buffet-like returns) as good returns. But this is more of a goalpost at this stage since positive yearly returns are still hypothetical in my case (but maybe not too far off this summer). In the beginning I think 6.18% over time shows you're clearly above break-even, and should be confirmation enough that you're onto something (but nothing to quit your dayjob for). However, this process is and should be non-linear, so personally I'd never settle for sub 10% but strive for better returns.
Of course, some funds may have better returns, but it's more about luck, how much money you have in them, when they start underperforming and whatnot. If not willing to spend years to learn trading, better to just buy the index and some funds managed by professionals. Why to learn trading shouldn't just be about the money, as that is putting the focus in the entirely wrong direction. Maybe for Gekko and mythical natural cunts it works, but not for everyone else. It should ofc also be about the hookers and blow!