What is the meaning of collision theory chemistry ?

the meaning of collision theory chemistry is concluded :
that the fact of The reaction will occur when reactant particles collide and from the total collisions only a certain fraction have the energy to connect effectively ; hens will lead to the transformation of reactants into products according to statement of collision theory chemistry .

from this meaning of collision theory we can see that other molecules does not success to connect and collide ,the process lead to production of reactant materials .

And that is why ? as collision theory chemistry states and due to only a portion of the molecules have the enough energy and the right angle of orientation at the moment of impact to break any existing bonds and form new ones.