So see a PGA teacher/Instructor. It is very difficult to provide any assistance without seeing your stance, swing, etc. They are pros and well trained in correcting your problem. If you are serious about correcting it, find a pro in your area.

Those of us on this forum are loyalists just like yourself. There might be an instructor of two on here. But they need to see your "hit" the ball.

There are several things that can lead to a slice. You need to see an instructor who can analyze your swing and point you in the right direction.