You can have fun with your live account if you have large capital on your live account. If not, this is not good advice. Because multiple lots can delete your account in minutes if you don't get a lot of information about market trends and you don't know which direction to move. So I always prefer the lot value of 2% of your capital. and it only depends on your potential risk ... there's nothing wrong if people take multiple lots but investors always remember and analyze their potential risks ... if you have the right knowledge about market factors and fundamentals then you can increase your lot size but if you don't, trading can be done on a smaller lot size