According to your profile, you're only 19 or 20 years old, so if that's true, a Retirement Visa is out of the question. You haven't given any information about yourself, so there's little advice anyone can give you. Considering your apparent age, how will you fund your idea, is something to think about, for example. Again, your profile... "Digital Creator", so maybe look into the DTV (Destination Thailand Visa), which is a new type of Visa. Education Visa may be a possibility for you, but again, look into it if it's maybe something you might consider. Best place to start is the website of the Thai Embassy or Consulate in your home country. Provide a little more information about yourself, not specific, but whether you have decent funds in your bank account to fund any idea you might have, do you want to live in a city or elsewhere, or think about things like this before doing further research. Don't just put up your post and not respond to any comments either, as you might not get help if it seems you're not interested in what others have said to try and help you.
Extensions are 30 days only, but if you're passport country is one that qualifies for the Visa Exempt entry, then you can just go to a neighbouring country, stay for 1 day and return to Thailand and get a 60 day Visa Exempt entry
it would only take an Immigration Officer to be on the ball and someone doing that would be in a spot of bother. They would only need to see in a passport the stamp showing the previous entry into Thailand, check their computers and also see the date the DTV was issued and conclude that fraud has been committed.
sounds like you're the one that needs a hobby. Being a keyboard warrior doesn't qualify as a hobby, but if you're lost about what hobby to take up, I'm sure that Google can help you. It's a pity there isn't a vaccine for keyboard warriors.
that sounds like the easiest way, the 60 day Visa Exempt... If your based not too far from a border to be able to do the 'bounce', or want to take a short holiday to a neighbouring country if you're quite a long way from any borders.
from my little understanding, with the monthly income method of 65k on retirement/40k Marriage extensions, once that monthly income has arrived in the Thai bank account, it can then be sent back overseas to earn higher rate of return.
I wouldn't call it a ridiculous question, though I agree the OP should have provided more info and could have searched online first, assuming he didn't. A ridiculous question is like the one I saw asked yesterday: a guy who was going to fly from Bangkok to Sydney asked which side of the plane he should book a seat on so that he gets a good view of the Opera House as the plane comes into Sydney. Duh... it depends on the wind direction as to which direction the plane approaches from, right?