I tried soo many guides and soo many things i browsed like the whole world wide web and I could not install aircrack-ng suite. Any help would be appreciated :) Thank you all, Best regards.
I don't know what steps you have taken, but aircrack-ng is in the "universe" repositories.
All you need to do is open up a terminal, and type in the following:
sudo apt-get install aircrack-ng
This will install the whole suite, including airmon, airodump, and aireplay.
Make sure that you have the universe repository enabled. To do that, search and open the "Software Sources" from the dash, and make sure that the universe repository is checked (the highlighted one below).
If all of this still does not work, follow the steps listed in this answer here.