I Nearly Destroyed My VW Polo's 1.2 Tsi Engine, While Replacing The Timing Chain! Pt3

We are one step closer to fitting the new timing chain, I've nearly messed up a few times now, but I've noticed in time. Can I still save this badly neglected engine and get this VW Polo R Line back on the road.
I've never replaced a timing chain before so this is a massive challenge, especially on a neglected 1.2 tsi engine. As I delve deeper into the engine I'm finding more problems. Can I actually pull it off and replace the timing chain or is the engine knackered.
Hopefully, I can pull it off and actually fix the engine faults, The EPC and Engine light are on, but The engine has a misfire, Is the timing chain stretched or is it knackered.

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