Yes all of them are relevantAre the keywords that you're currently ranking for relevant to the main keyword?
Cannibalization is cannibalization.Then, you should add more content about that keywords. Traffic is traffic.
Nope it just shows my page isDo you rank in any position for the main keyword at all? Even if it's 100+
Adding 3 articles a day all uniqueThen, you should add more content about that keywords. Traffic is traffic.