Had a cleaning specialist check for any blockades that might be hidden somewhere causing issues from their past experience, but everything checks out. Everything from the exhaust manifold is clean and no blockades.
Guess from we we're gonna take a few steps back. I want to fully re-check everything related to the injectors, such as connections and cables. Then see from there.
Funniest part is I bought a temporary replacement car to get me places while this one doesn't run, and a year has passed and my replacement car soon will need to pass its MOT and I have doubts. Fun 2 months ahead for me now.