I suggest a hybrid. Probably an iron body and alluminium wheels. Or full alluminium.
Focus on large frame size.
Handle bar angle should match your comfort.
Dont take front shockers. I dislike even rear shocker.
BMX bicycles are not bad from my experience and the prices start from hundred dollars or so.
Make sure you choose something suitable for you , depending on the weight and height.
Here is a great source https://www.bikertricks.cоm/bike-size-chart/ which might help you to make a perfect choice.
What about e-bikes? I've just looked through these super73 reviews and I think I'll buy this bicycle. Moreover, I have issues with my knees, so it seems to be a wise idea. But any thoughts and advice are appreciated.