Firstly, there is nothing wrong in having supporters!
Once even i had 12 managers supporting me and you should know that if someone have like 20 supporters even than Nordeus have capped the upper limit of support at 15% so, number of people attending doesn't matter at all as 15% is as high as you can be.
What you should do in my opinion is start adding good active managers to your friend-list through in-game/FB so, that you also can have someone to support you.