You don't have "your MEP" in most EU countries. They don't care about you because their loyalty is to the party, not the voter. They need to be with good standing with the party to even get on the list.

There are so many indirections in that "democracy" that it's no longer a democracy at all. You don't get to vote on issues, you don't get to vote on people (they are just a proxy for a party). You just get to vote on 2-3 reasonable parties (if even that). There is nothing you can do in that system about a specific issue.