Hi Hijong Park.
I may have some good news for you: if you don't know it already there are likely oxps that can reduce both the tedium and difficulty significantly.
For example if the game is too hard, try phkb's population control mod. It's still being tested I think but it makes the 'safe' systems much safer and is great for getting started in the game - stick to the safe systems until you can afford a few upgrades and it should really help.
As for tedium, a personal bugbear of mine is the traffic masslocks that can take quite a long time to navigate through, and so I made the masslock compensator mod to require the player to spend less time escaping uneventful masslocks (and Norby has done similar with his VariableMasslock oxp).
There are other oxps that make things simpler and/or easier (e.g. docking). Or, if there isn't an appropriate oxp then someone might even be inspired to write one for you.
In any case, thanks for posting and welcome.