How’s Delta’s A350-900 on Detroit to Tokyo route?

I will be flying from Detroit to Tokyo in coming few weeks. I’m a nervous flyer and got phobia. Takeoff/landing, turbulence is my biggest enemy. Plus now it’s not helping me with the recent plane crash incidents :(

We’re taking airbus/ A350-900. It will go around Pacific Ocean and I have never experienced flights before that takes Pacific route.

Do you know if flights from Detroit to Japan on Delta usually experience crazy turbulence during winter months?

Also, how’s A350-900 in general?

Please share any tips/ advice that you will have for me! Thanks