I already know how difficult my keyword is. Not at all. Without even a single backlink, it was on page 3 as soon as the domain got indexed.
Also I don't really believe most of these tools because they calculate the competition using Moz metrics which are the shittiest metrics to use.
Moz doesn't have 90% of links in its database. With such a shit database, I wonder why so many keyword tools use their metrics.
If you check the keyword services of any of the reputed sellers here, you'll see that they all manually check the first page results and ensure that there's no competition.