If this list describes you, you could give yourself the solution to the problem in the next few minutes! Miracle Swimming can teach you to be confident in deep water.
Knowing formal strokes is not relevant to being safe in deep water or being able to Swim. For more information about that, read this.
If this list describes you, you already know how to Swim and you must be looking for a strokes class, correct? We recommend that you do a search for your local YMCA or Total Immersion coach.