Best Lenovo for a broke student

I’m looking for a 2-in-1 laptop that works as a tablet too, since I love writing and need something versatile. I already have a ThinkPad, which I like a lot

, but I’ve heard their 2-in-1 versions can be sensitive and break easily. Is this true?

I need something lightweight because I carry it a lot to school, university, and my internship. Ideally, it should have 16GB of RAM and at least 500GB of storage.

What’s the best option for something durable, portable, and perfect for writing?

My budget is between 500$ and 700$ max ... :)