I didn’t find that a problem. The tutorial makes it pretty clear that you’re primarily concerned with making money to get better stuff, and it spells out that there are two primary ways of making money: trades, which you can identify through the Search function looking around at markets, and doing missions. There’s also asteroid mining, but that’s hard to figure out and not that profitable.
I’ve done asteroid mining on Impossible, but only because you get boxed into just a couple of systems by the Dominators, and you quickly exhaust the trading opportunities with so few planets. The tricky bit about the asteroids is that they move slowly in the outer system, and incredibly fast as the approach the sun. Since it’s difficult to be in the right spot in the outer system, it’s mostly about looking at the asteroid plot and intercepting where it will be in a few turns.
I think that’s deliberate, because the time commitment for the RTS missions is very high. So while it doesn’t take any game time, it takes a lot of player time, and the rewards are large for that reason.