Just a comment in the hopes I am not alone

I have to say the use of pronouns (and to a lesser degree prepositions) is one of the most challenging parts of learning Spanish I have experienced thus far.  I am REALLY struggling on this!! If you look at my small (two question) quizzes I do fine, but when I take a ten point quiz I do very poorly on this topic.  I AM trying!  I need to go very slowly, using tools like "to whom, for whom" is the action taken to find the indirect pronoun answer but NOTHING is coming naturally at this point. Please don't take this as whining before giving up.... I am not giving up!  Anything worth having requires work so I am forging on. I just wonder... am I being unusually dumb on this?! Do any (most?) other students at my level struggle this hard on the pronoun (preposition) usage topic? As always I need to say how much I love Kwiziq and am so grateful to have found it! I'll get this sooner or later (but any other tricks to help me would sure be welcome!!).