suspicion

A rabbi has entered our region and has a variety of behaviors that, in aggregate, give me the impression that this is a training to silence adultery and sexual advances if found in him.
He works hard to gain more and more power even in places that are less acceptable. A rabbi is pushed to advertise himself on a scale that is disproportionate to a small, sleepy neighborhood. He makes a lot of noise and creates a situation where he is very famous and it will be difficult to criticize him. I have seen how he makes people depend on him for matters that are not of interest to the rabbinate. Come to me and I will help you with this. And in this he is pushed to give lectures in places that are not strong enough. Tell him that there is no need because there are enough good preachers among them (he is less than average in the field). He is pushed into kindergartens, elementary and high school institutions, etc. He also tends to lie and cheat and tries to run over anyone he thinks is possible.
In short, in all his known actions so far, there is no clear sign of sexual perversion, although he creates around him a force of power and control in all areas of his being, so that anyone who is harmed by him will of course have no opening to speak of.
 
My questions
Is it appropriate to arouse the people to this even though there is no basis for talking about the frightening subject itself?
And the question of casting blame: How can one slander and say, "Be careful not to associate with so-and-so" when there is no evidence whatsoever? What do you think, my son, would you not serve your friend?