Shotgun microphones are almost omni in the low frequency area so you will still hear the bus. I would check out the DJI Pocket 2 Creator combo. It’s pretty amazing for the price and includes a radio mic which is likely a better option. Auto focus and you can use your smart phone as a viewfinder/ screen. It has a selfie mode, is a stabilizer so works really well hand held. Has a thread for a tripod. My partner got one recently and the features for self Vlogging are impressive as is the image quality. And if the YouTube venture doesn’t develop, you have a cracking good camera system for home movies that fits into your pocket and runs for hours on the rechargeable battery.
Check out Potato Jet. His Youtube channel talks alot about all sorts of cameras including Vlog cameras. he’s reviewed the DJI plus a whole lot more through to higher end gear.