Many websites fail not because of bad content, but because small design problems pile up. One common mistake is too much text packed into one page, which makes reading hard. Another issue is slow loading time, especially on mobile data. Hidden menus and unclear buttons also confuse visitors. Popups that block the screen can scare people away. Forms that ask for too much information feel tiring. When sites ignore these issues, users leave quickly. Which mistakes should site owners fix first to keep visitors interested longer online today now?