How big is your allowance?
Don't mean to sound pedantic but just to get you in a drivers seat is going to cost you around $2000-2500 in safety gear and drivers fees for your first race and $1000-1500 PER race after that. So if you join a team that does 4 races a year, you're could be staring down a $5000-7000 investment. A suit is just part of your safety gear, helmet, gloves, shoes. nomex undies, and most importantly a HANS device all rack up the cost, even if you buy used or share a hans.
have knowledge driving sports cars and cars with manual transmissions.
This is highly generic. What kind of "experience". Real world racing is much different than sim racing, and downshifting into a corner at 100mph is a lot different than pulling up to a stop sign. There is no reset button. If you badly crash someone's race car are you prepared to spend up to $20,000 to help replace that car?
The best thing you can do now is figure out how to get funded for this expensive hobby, and start attending HPDEs at your local tracks. If you can get your own track day beater car (like an old miata) and learn how to prepare/repair that car, you'll get a good idea of what goes into racing as well as gain non-sim experience that you can put on a resume. There's no reason not to wait a few years, especially since you "will do whatever it takes".
At the end of the day, someone has to pay the bills, so it's a crazy notion to think that just buying a suit is going to get you a chance to race. People in Lemons are crazy, but not that kind of crazy.
1989 Merkur XR4Ti: Project Merkur Space Program - Wins: Class C - Colonel and the Sinkhole 2023 | "Heroic Fix" The Pitt Maneuver 2023 | "Halloween Meets Gasoline" The Pitt Maneuver 2022
1980 Dodge Challenger: Most Extreme eLemonAtion Challenger (Rust Belt Ramble 2021 Dishonorable Mention)