Get the best sounding friend you know and let them know what you’re doing. Say you did landscaping or wallpaper work for someone and give them that friends number doesn’t even have to be their real name you give them and boom, you just verified your work history. Obviously depends on what you are applying for you could say computer work or a number of many other things. If you do work like that for someone you’re private contracted so they have no way to prove that you didn’t do it