How can i increase my ratio?
You really need to try to upload some videos that aren't available here. If you have some themed movies, or vintage clips that aren't here that would be a start.
You can also look at the Freeleech section- getting videos from there will not affect your ratio negatively and will give you a boost if you seed them. Keep seeding the things you download- and try to hold back from uncontrolled downloading for a while.
Good luck!