The general rule to win a frame game is keep it simple, don’t complicate things! Clear the board and make your hammer.
If they have a high block and it’s your hammer, take their block off, it counts the same as if you had scored and you won’t hit a line.
Leave no doubles; you don’t have time to catch up if they get too far ahead. Don’t take hides you don’t need.
You see it all the time; someone will take a hide and be open for a kitchen shot and a game won will be lost, run the frames out.