Should I skip the Drainage system??

So this is my first playthrough of the game and here's what has happened. When in industrial complex I actually went straight into the shaded citadel instead of the "correct way" being the garbage wastes. Basically I went through citadel without the moon's light and found the entrance to shoreline. THEN I explorer every single inch of this region only to find that there is actually no exit except like to vents i couldnt get to. When i finally searched up a video on yt for help i saw everyone getting out of shoreline to citadel through the gate i used to get INTO shoreline FROM citadel. I collected the light from Look at the moon and can go deeper into citadel now but decided to explore garbage wastes to not miss out on anything, but have now found myself stuck going through the drwinage system which ive heard has led people to even drop the game. I also know that all this area leads you to is shoreline whoch i have already explored thoroughly. Do i keep suffering ans go through this mindnumbing area or just explore dark parts off citadel.

TLDR: took the "wrong" path and skipped Drainage system but already obtained light from moon. Do i just go reexplore citadel??