Take a safety class, I saw people go in that have never been on a bike and do well b y the time they left in just two days.
Find yourself a Harley Sportster, you can find a used one for less than 5k and will have a bike that is pretty comfortable to ride. All be it too small for me.
Then from there, you can sell the sportster for what you paid for it and get what you really want!!
I can get you a deal on a sportster in Los Angeles area if you are close
Then there is the new Indian Scout, like the sportster with 1200 cc, this will do anything you want and look cool
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Carbon is not the problem, it makes up 0.041% of our atmosphere , 95% of that is from Volcanos and decomposing plants and stuff. So people in the US are responsible for 13% of the carbon in the atmosphere which 95% is not from Humans, like cars and trucks and stuff and they want to spend trillions to fix it while Solar Panel plants are powered by coal plants
think about that