Churchill wasn’t evil he was incredibly lucky. He got Britain involved in a war (with Germany) it couldn’t possibly win but ended up on the winning side because:
1. Finland surrendered to Russia just 2 days before British troops were due to land in Finland to fight the Red army, thus he avoided being at war with both Hitler and Stalin simultaneously (we’ll ignore the fact that Britain declared war on Germany for invading Poland, but not on Russia when it did the same thing).
2. Hess landed in the wrong place in Scotland and thus got arrested before he could make contact with the anti-Churchill peace faction (WC was very unpopular at this time).
3. Hitler stopped his armour short of Dunkirk to allow the British army an escape, hoping this would bring about peace.
4. Hitler and Stalin fell out and attacked each other rather than keeping to the terms of their treaty (which involved partitioning the British Empire).
5. Japan attacked America thus bringing the US into the war.
6. Hitler decided to declare war on America thus bringing about American intervention in Europe.
So WC was able to ride to victory despite the poor performance of British armed forces and his own less than brilliant military strategy.
By the by, he also won an election in 1950 with fewer votes than the opposition a la Trump.
Further, he escaped blame for starting WWI despite the fact that he, more than anyone, tricked the British government into going ahead with a conflict that could still have been prevented.