yeah iv already created playlists and added them accordingly?Adding your videos to playlists can help with this.
Some people say that it happens when your videos have a lot of similar tags (and unique ones such as your name), but YouTube doesn't put much weight on the tags anymore. I suspect that it will display your videos as suggested when it detects that viewers are watching multiple of your videos. Whenever I post a new video there are none of my videos suggested, but a few days (to weeks) later they start appearing.