Ok , you’re not as sharp as I thought you were...but to make it even simpler for you...
Even if a chemical reaction within a cause and effect world is responsible for a thought that is acted upon, if that thought does not relate to the world as it is then that act is free from material cause and effect.
It is also the case that we are able to control our thought processes through will power ( eg , meditation), we can control our wills with training ( for a materialist this implies that our will can have a chemical effect within the brain)...so for instance , a lazy good for nothing liberal retard could be trained to be an effective person. The common sense explanation of this is called self control...self control is what we mean by free will...you have a degree of autonomy from the world around you based on your will power. Everyone wants will power therefore increasing it is a natural desire...and one that all sane human beings can engage in.
The realm of thoughts really do have a degree of separation from any material reality that may exist, but thought can relate to real concepts that do not exist in the material world...for instance , geometric forms do not exist outside of our minds, but they are real nonetheless.
Obviously
all this will go over your head but others may understand the implications lol.