Issues recognizing text and counting the cell depending on a condition

Hi!

It is my first time on this forum so I hope I don't oversee any of the rules. I am trying to do a quantitative analysis of tweets for a linguistics paper. I would like my formula to see if a condition is met and count the amount of cell where text (no specific one) is found. I would also like to count 'text' in more than one cell, and eventually be able to do a count per user.

I have tried several things I have deleted already, not knowing quite well what certain symbols actually do, and trying to adapt some of the examples of the forum. This was my last attempt:

=SUMPRODUCT(--('20 only'!$O$2:'20 only'!$O$1285="Chavismo"),--(ISTEXT('20 only'!$M$2:'20 only'!$M$1285),--(ISTEXT('20 only'!$N$2:'20 only'!$N$1285) )

Attached is a simplified example of what I am looking at.

Thank you in advance for your help!