Hi rohanp4,
Thank you for reaching out Microsoft Community.
The mouse pointer can't be controlled by your finger when you're using the touch functionality features. This can only be controlled when you're using a mouse or utilizing the touchpad/trackpad on your keyboard.
If this answers your question, feel free to mark this post as an answer. Otherwise, don't hesitate to respond to this thread if you need further assistance.
Kind Regards,
Crest_Z