A “prayer” is a request. NO Catholic I know worships Mary or anyone else other than Jesus and the Father.
why do you have to request things from someone that only God through Christ can fulfill? Where in the Bible are you reading that you should pray to people, dead or alive, and request things?
The very act of praying to someone is proof that you believe they have the same power as Jesus Christ. They do not. That is a lie. Do not be a victim of strong delusion.