It would be interesting to know what ThinkPad model it was. The older ones had pretty small trackpads so they were difficult to reach.
On Macbooks the trackpad is so large that you can reach it even from the sides of the laptop and the two finger scrolling actually works without second thought.
I had the Thinkpad T480 with a touchscreen. Thinkpads were really awesome, you could easily fix that thing by buying parts from eBay.
Probably a yoga by the sounds of it