•The website has no contact information. A legitimate business has a way for you to reach them. Look for an "About" page that offers information on the company or CEO, along with a phone number, address, or contact email. (Try calling the number to see if anyone answers.) A website with only a contact form and no other way to get in touch with an actual human is suspicious.
You could also opt to use existing websites for making money. These include both active income and passive income methods. For example, you could sell some used items or invest in creating some digital designs that then can be sold on merchandise. Again, devote a sizable portion of your time to passive income so that you can slowly build up earnings that will arrive on autopilot without any extra added effort.