Right off the bat: There truly was no "average" poor French Revolutionary. As in most societies, people held a variety of jobs to maintain an economy-- artisans, soldiers, shopkeepers, bakers, valets, housekeepers, clergymen, teachers, doctors, lawyers, judges, farmers... etc. Now some of these careers (teachers, doctors, lawyers, judges) were more typical of the middle class, but these men often would have employed a variety of assistants, and those who weren't on the extreme end of poverty certainly weren't barred from these jobs if they were capable enough.

Now as to your question as to the Revolution specifically, keep in mind that if you're talking about the 1800s you're no longer in the 'Revolution'-- that's Napoleon, and you're definitely not active during this period, as most popular movements from below have already been brutally suppressed.

Even walking that back and playing it through from the beginning of the Revolution is impossible to give an answer, as I alluded to there truly was no 'average' French Revolutionary. The 'poor' were an extremely heterogeneous group that varied by location, profession, ideology, etc. I have a couple of write-ups on these subjects that I think would certainly help answer your question, but certainly let me know afterwards if you have any more follow-ups for me!

Was the French Revolution a net positive for the peasantry?

How did life change for the sans culottes under the Jacobins and subsequently after Thermidor?