Share 'Recommendation for beginner racquet?'

Hi folks. I'm 44 year old male.  I have Head TiS1.  Although I have played few years ago, I stopped for a couple of years and have just gotten back into it.  I feel like I have no power behind my shots, since I swing as hard as I can but there's hardly any pace to it.  I also tend to mishit a lot.  I realize the best I could do is go to group lessons, but aside from that, do you recommend I swit…