e-bikes dont drive by themselves, are slow, dangerous (the roads are very narrow with no sidewalk) open to the rain and have shit carrying capacity. And I say that as a fan of e-bikes.

I mean, are you intending to carry a ton of stuff on the bus? If cargo is that big a deal you can also look for a cargo bike. And buses aren't exactly known for being super duper speedy, when I ride my normal bike around Tokyo I'm generally faster from point A to B than actual personal cars (to be fair its super dense and slow here for cars). Agreed that it does suck in the rain though, and maybe people drive faster out where you live (I personally prefer biking on the road here in Tokyo, way more hazardous weaving through people on the sidewalks).