Because of the First Past The Post, even a Parliamentary system in the US with the current Mathematics of how Congress or the Senate representatives are allocated from votes (i.e. single winner per electoral circle) would be still be a two party system which doesn’t represent most people.

Just look at Britain (which has a FPTP Parliamentary System) were the current party in Government has more than 50% of members of Parliament even though they got only 34% of votes and is arresting people as Terrorist Supporters for demonstrating against Britain’s support for the Genocide in Gaza, has enacted quite extreme anti-Demonstration legislation and is passing electronic communications surveillance laws similar to those in Despotic Autocracies.

Absolutelly, Presidential systems where ONE PERSON ONLY supposedly manages the nation according to the will of millions are complete total bullshit because it’s impossible that one person can reflect the preferences of millions, but Parliamentary systems with First Past The Post aren’t much better because de facto they’re generally equivalent to 2 sets of views rather than just 1 - theoretically multiple parliamentarians from the same party would mean multiple view, but my experience living in several such countries is that it’s rare for a member of parliament not to vote the same as the rest of the party in a vote - I would estimate that dissent is in average less than 5%.