Had starter replaced twice"reman was piece of **** and noisey", then 9 yr old batter,
first vid on no start
https://photos.app.goo.gl/qv4uYZ1W2ZoRU72B6
second start with alarms lit"also have a lite with steering wheel that will come on"
https://photos.app.goo.gl/B4m4KfDK8YDT9Et29
Then had crankshaft sensor,both camshaft sensors.No visible damage on crankshaft.
Each replacement since battery was started multiple time at shop and was ok to go.
Next day wouldnt start first try, just turned over.Started on second try with most fault light lit and staying lit.
Drive and park and next time all was fine.
each sensor was replaced 1 at a time,codes cleared,tested and started fine then sometime next day sometimes a few days later same issue occurred.

 

Get the DTC (codes) and post it here.
Google search the codes and have a better understanding of why the DTC were put up
Many mechanics will just use DTC to replace parts in hopes of fixing
The DTC is really only an indicator of where to start to find the issue.

 

timing chain is almost full tooth off and wore down cam sprocket

 

Chains are not almost a tooth off they are a full tooth or more off or not at all It may be the chain was stretched.

 

Yeah, GRCauto is right. Got to whole tooth off. And the tensioner??

 

Were you able to grasp the underlying cause? I'm facing an identical issue. I replaced the VTC activator and the timing chain with the tensioner just a week ago. Surprisingly, this morning I encountered the same problem where my car wouldn't start on the first try, just like in the original video you shared. To make matters worse, error messages also appeared.