Don't use tor browser. Make a tutanota or protonmail account and wait for 2 days. This will make sure that your account doesn't get locked when you receive the Twitter OTP like 5 minutes after account creation.
Use Windows or Ubuntu with VPN. Passing the captcha for creating an X account is a lengthy process (10-15 minutes) but it's faster on ubuntu. Then keep liking, retweeting, commenting and eventually your reach wlll increase and more people will see your activity.
Don't forget your email password, and try to keep logging in from the same VPN country. If the location changes they might ask you to enter the OTP sent to your email, so it should not be a disposable email.
Probably. I'm using it as a "probable" blank slate. Because websites (Twitter) get mad if you send them total bullshit about what is your browser. This was kind of my point about "private mode". My goal is to send as little (valid) info to the websites I'm visiting in order to use them. It's not a general privacy request. I'm not putting actual "me" data into bullshit web browser.
The way I use windows, think of it as using a blank virtual machine to access the internet, that's regularly reset. I don't use it for here, if c/whatever is looking tho. I've been through a few for this purpose with Edge mainly having the value of always being installed.