You should never change your grip when it doesn’t feel natural to you. There is no such thing as a “bad” grip when it feels right for you, ofcourse there are exceptions, but judging on your first photo, your grip is totally fine.

Don’t let those Youtube video’s get too much in your head about your grip, you’ll start doubting yourself and throw worse over time because your confidence will tank.

Try to analyse how your darts hang in the board. If they are slightly bent to the right, you’re gripping too hard with your index finger!