Here is a great tip I got from a friend. He said to me to shave normally, with the grain. When you do that, take the next stroke at a different angel that is not against the grain, just at a slightly different angle. Keep doing this until you fill a full circle back against the grain then it should feel very smooth. Then once done apply some smoothing lotion to the skin.
That will then get every hair keeping the skin smooth and free of ingrown hairs. That’s usually caused by irritation. Splash with cold water to close the pores and apply any lotions with vitamins.
I’ve not forgotten this tip to this day!