Lenovo driver assist ThinkVantage software

Usually directly on the Lenovo support site, support, PC, then browse for your laptop model, and then you should also see a driver download option.

But I wouldn't recommend using that Thinkvantage stuff. You can get the proper drivers manually or directly via Windoze Updates. There is no need for that bloatware.

If you deleted it, they've moved to the Windows Store  https://www.microsoft.com/en-us/p/lenovo-vantage/9wzdncrfj4mv?activetab=pivot:overviewtab

Even their original website will lead to the Microsoft store. https://www.lenovo.com/us/en/software/vantage

Yeah I woder why they moved it off their site.