Ah never give up. I had a ‘74 Mitsubishi that had a chain. Only took me three tries to get it diagnosed as a worn out chain and needed new oil pump and tensioner! I literally cried after the second set of valves bent in that motor!
Mind you I was a high school kid with little money but a desire to get the thing back on the road. Like I said third time worked and it ran in excess of 100K miles after that.
So given your predicament your not that far off. I question a lot of the things you did. New coils? Cam seals? Removing ECU... just seems like your inexperienced. Rule number one. As with medical professionals, “do no harm”. Do not remove and replace items just because you can. Honda’s are notoriously reliable on most parts so why were you changing or removing these items?
If you went as far as removing the ground cable from engine to frame to battery I’d suggest you walk away. You clearly have missed the mark for a simple timing belt change. Use it as a learning exercise in what not to do.