You should have uploaded the graphs. Make sure you do so in your next post so that others can give you more relevant comments.
Given are two figures concerning interactions in various dialects between French adults and their offspring.
.... this line is very confusing, especially when you don't have access to the graphical representation, it is very difficult to understand what you are trying to say.
Generally overallOverall, Alsatian replaced Occitan as the most widely-enjoined indigenous language as time elapsed.
Though being rated as three lest significant languages, Breton, Creole, Corsican only saw seen as marginal drop in number of adults speak to their children whilst Alsatian has experienced a decrease of one third its previous quantity and Occitan has overcome a half.
... this has many issues; first, this line is too long that disturbs your flow of ideas. Also the clarity of your ideas is at a very low level, plus grammar issues also can be seen . You better re-phrase this line with two or three short lines.