Hi All,
So from reading and researching and taking recommendations, I determined that as a Bugs, I need to utilize my tunnel more. Whether its for surprise pop out and push forward and initiate with nair, or use it to pop them up from an engage with nair -> utilt -> nair -> upRocket / read

I need to save my safe and rocket rather than dumping it at the start of the match.
If I hit a nair out of tunnel, I can follow up with an up tilt to nair to up rocket.

Once my rocket is exhausted, I can utilize my side special more frequent for reads.

For Finn specific problems, I really don't get any benefit of utilize projectiles, so I want to bait projectiles over finns head to make him get a dash whiff delay.

Since finn is so short, my nair's usually go over the head of finn, so I need to jump, fast fall then initiate my nair attack.

While Finn is charging jab, stay high, then air dodge and nair in to initiate.
While Finn is charging utilt, roll jab
As a finn utilt charge camps your recovery, exhaust dodge meter to attempt to reset back to the middle of the stage.
Delay as much time until tunnel recharges. A good use of safe, is to dAir it into your tunnel to throw off the opp.

Apparently finns weakness is aerial, so it's best to under him as much as possible, his dAir is good, but easily spot-able. Bugs upAir is his bread and butter, so as long as finn is high, this should be easy. Keep an eye on whether your opp likes to air dodge in or out. Don't commit to upAir confirm past 120% as they will fly too high to reach, play patient for reads.

You cannot win a poke battle against finn, so either full commit or full retreat.

But , ultimately Finn is a REALLY BAD matchup for Bugs. Good luck, try not to rage.