That’s not correct Vera, in the UK we vote for 1 member of parliament (MPs) for every ‘constituency’. A Constituency is a town or an area where about 60,000 people live.
The government is formed by the party who has most MPs after the election NOT necessarily by the party that got most votes. Its not that rare for the winning party - to have more MPs but fewer votes than the losing party.
The USA system is obviously over-complicated & mysterious - it seems to have been developed out of the British system but it isn’t the only one in which the winner hasn’t necessarily got the most votes. I suspect a lot of countries that used to be in the British Empire will have similar electoral systems.