Were the French people fighting for their liberty during French Revolution Terrorists?

Answer 1

Some were, but the overwhelming majority were not.

What makes a rebel a terrorist is when he attacks a civilian population with the intent that such an attack will cause a government to accede to his demands. A non-terrorist rebel typically attacks soldiers of the government he opposes. In the case of the French Revolution, the rebels opposed the French military, which would put them into the non-terrorist category.

What makes a government a terrorist is when it brutally attacks or represses its own citizens. After attaining power, the rebels established a new French Republican Government with a "Committee for Public Safety". This committee, chaired by Robespierre was responsible for the Reign of Terror in which numerous French civilians were guillotined for minor offenses if any. This was an act of terror, and individuals like Robespierre may well be seen as terrorists.