"I prayed to a god to have a girlfriend, and now I have to die and restart over and over again!?"
Follow the guy who is destined to die among the six heroines!
From Mangadex
3 Volumes (Complete)

I won't get too deep into it, but imagine there's a series you like and think is pretty unique.
Now imagine in the last couple bits of it, it takes a sharp left turn, abandons almost everything it set up, introduces a bunch of new issues, walls of text and exposition that don't actually help at all, and settles on an ending that is completely unrelated to the original premise because everything they set up along the way was effectively pointless and unrelated to the themes and outcome. (And somehow despite all that, some things are still unexplained!)
I genuinely can't imagine how you would arrive at such an ending other than going, "Well, I want a big fucking twist and I don't care about anything else."
Awful.
If you want something with a somewhat similar premise and vibes that hasn't completely flopped, give Ore no Genjitsu wa Ren'ai Game?? a shot.