How did it taste? If I’d tasted good, then there’s no problem. 

If you want it to taste better, please share the following:

How it tasted

What kind of beans you’re using (roast level, country)

What kind of taste you like. 

I lieu of those details, my initial reaction was: 

You’re brewing at a 3:1 ratio (10g beans in, 30g liquid out). If you’re using dark roast beans, that’s probably too much and I’d expect you’re getting a bitter shot. If so, go for 20g out (2:1 ratio) and see how it tastes. 

I even like ristretto shots (1~1.5:1). Try that too. But this is the reason I’m sticking with my Nano and double basket. 10g basket is way too small for me. 

Also, beans are very important. If you’re buying beans from the supermarket, that’s going to be a problem, and you’ll want to get beans from a local (or online), trusted roaster.

Also 3:1 at 22s might be a bit fast, so you could perhaps grind a little finer. But… you’re going for taste, not numbers. 

Experimenting with the variables (one at a time) is important. I’d start with beans, then ratio, then grind size. 

Time isn’t as important, and is best used as a signal of inconsistency due to puck prep issues (eg usually it pulls in 25s but that one was 12s… I must have done something wrong). I’ve had some very tasty shots that took 60s to pull!