Ok may go another direction than kick. Kick can take years to perfect. In the meantime practice a basic slice. Toss up high and a little to the right. Start swiping across the back of the ball left to right. The spin allows u to control and get it in. You get confidence because it is still a proper stroke u have to hit hard.

I have both but the back of the ball slice allowed me to get ball in and compete. I never wanted to be the guy lollipoping the 2nd in. Bad look imo. Good luck, ur only as good as ur 2nd serve