Buy shitty small rural house built nearly 200 years ago
Spend any and all free time & money learning the skills & buying the tools to strip it down and rebuild it. All of it is online. Do it quietly and you won't have to pull permits. Hold yourself to a higher standard than what a permit will allow and you'll be fine.
Continue to invest in yourself and your skills. You will become a rich person if you do this, if not in money, then knowledge. The earlier you can do this, the more value will compound off of your skillset.
It's not fun but it's possible for myself, born 98. Got my little slice and the sunsets and stars are sure damn pretty out in the boonies. Gotta deal with the rednecks & general small mindedness though.
Backwards time travel is physically impossible. You would need to travel at truly negative speed to achieve it, but the magnitude of speed is always positive.
Thinking about it, it's even more complicated than that. You're right that a negative speed would not work since the square of a negative number is positive anyway. But a speed higher than c would result in a negative square root, so no real solution. Also, traveling at exactly the speed of light would divide by zero lol
But maybe our formula is wrong. Or it's just impossible, who knows?
Being serious now, is this a developed country thing? I live in Brazil and it ain't easy to get a house, sure, but as impossible as the internet makes the US sound like
Kinda. We have investor companies buying hundreds of houses and properties each with the hope of selling later or renting. These are both negative outcomes for the average person who is losing purchasing power with inflation. This is also highly dependent on where you are in the country.