Agreed.

Bad battery. Bad (high resistance) connection, or bad ground.

Bad battery can be ruled out since even when battery was being charged an attempt to start wasn't successful even though it showed 14.7V on the dashboard.
Any idea where the bad connection could be?

Hello everyone, I am new here
First it is worth mentioning that I'm from Europe so I have C-Force 520L EFI EPS model.
So now after it has been ridden 4000km, I'm experiencing starting issues. At first, the starting solenoid was continuosly clicking when attempting to start so it was easy to guess that problem is with the solenoid. But turned out, that while removing the solenoid and testing it with 12V voltage, it worked fine so problem is not with the solenoid.
When measuring voltage on the solenoid while it was clicking, it showed around 2V not 12V as expected. Sadly after some time the fuel pump also stopped working when you toggled the igination button on. So now the fuel pump doesn't work, nor does the engine turn over.
Measuring the voltage on the fuel pump while it should be running, it showed no voltage there so the problem is somewhere else.
TL,DR: C-Force 520L EFI EPS doesn't turn over, solenoid continuosly clicks on start, fuel pump not engaging but is okay
So now questions:
From where to find the electric scheme for this specific c-force model?
How to continue solving the listed problems?