[2022] The Repulse is the worst Tier Eight battleship in the game

Being up-tiered is always difficult - more so for a ship like Repulse that is not a "true battleship", but instead a Battle-cruiser.
The Repulse's job is to smack cruisers with her super-accurate main battery. It is NOT your job to stand-off with battleships. As you get up-tiered, the cruisers get better armor and bigger guns, which makes it harder for the Repulse to do that job.
Don't get discouraged! Repulse is a an absolute monster but requires a high level of skill and LOTS of patience to do well when uptiered.