Yeah, in FPTP systems such as the American one, the effective minimum required share of the vote approaches 50% in competitive districts (and doesn't even matter in uncompetitive districts).

Meanwhile, in my country a political party only needs 2% of the vote to be represented in parliament and this will grant them approximately 2% of the seats since we use a proportional system. When people know that their votes likely won't be wasted, they tend to not vote tactically, preferring to vote on issues instead.

Anyway, I mostly hear people in FPTP countries (US and UK) talk about transferable vote or alternative vote, but AFAIK these are not really in common use. I think most of Europe uses the party-list system for proportional representation (https://en.wikipedia.org/wiki/Party-list_proportional_repres...).