A month or two ago, I had a terrible 1st hole on a par 5. First, I sliced the tee shot out of bounds. Then I sliced my second ball and it barely stayed in bounds. I lost it soon after as I hit the ball off the toe and it went OB again. My next shot was a good one to get me to within 100 yards of the green but I shanked that shot. I don't even know what my score was on that hole but it was enough to make me decide I was not going to keep score and I would not try.

I find that usually works. To not try. If you stop thinking about your swing and just hit it, you might start hitting decent shots. Then once you get your confidence back, you can start trying again.