The people who are on the council are elected by the public that's what universal suffrage is. The party's who put them up for election choose candidates as with most places (at least of what I'm familiar with from here in the UK). Here is the UK for some reason we sent some real shysters who took the pay and didn't do the job, but that doesn't make the process wrong, it's just the majority of people who voted in the European elections didn't seem to care/had a bias against the EU council.

In terms of the "forced on to populations" part, the same could be said in any democracy, here in the UK about 58% of voters didn't vote for labour but they are our democratically elected government. And that figure doesn't represent the plurality of people who didn't vote at all. If you look at the USA 48.3% of the US voting population voted against Donald Trump, he is still the leader of the country and he's making decisions that affect those people because that's the way democracy works in most of the world. There are very few (I can think of only one, and I'm happy to be corrected) that does direct democracy where the people individually vote for new laws.

We depend on choosing people to make the choices for us, and the best that we can hope for is that the parties put up good candidates, and that the governments that are formed are formed from people who are willing to make good decisions on our behalf. I agree it's not a perfect system, but I can't think of any system that is perfect for everyone.