Assuming the very point you are trying to prove. Equivocation: Changing the meaning of a term mid-argument.
Weston defines an "argument" not as a shouting match, but as a case supported by logical reasoning and evidence. His rules focus on: A Rulebook for Arguments
A significant portion of the book is dedicated to identifying and avoiding , such as: Ad Hominem: Attacking the person rather than the argument. Assuming the very point you are trying to prove
Properly citing sources that are informed, impartial, and cross-checked. A Rulebook for Arguments