Can you use Smart Keyboard on legs ?

Hey, Im searching for a Keyboard-Case for my iPad 7th gen. And I just wanted to ask if with these types of keyboard-cases i’ll be able to type with the ipad and the keyboard on my legs, while im sitting on a chair. It’s like if I were asking if the smart folio keyboard can be used on legs ! ^~^
I feel like it’s just gonna fall, and I must buy a solid (pc like) keyboard-case … but idk… they look really awesome, and I wanted your thoughts ! thank y’all !
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pic 1 : [https://ae01.alicdn.com/kf/Hecadbc1cc4a14a45942baf4207835ec8H.jpg](https://ae01.alicdn.com/kf/Hecadbc1cc4a14a45942baf4207835ec8H.jpg)
pic 2 : [https://ae01.alicdn.com/kf/Hd3add787c6944fcdacbda6564c760768T.jpg](https://ae01.alicdn.com/kf/Hd3add787c6944fcdacbda6564c760768T.jpg)
pic 3 : [https://ae01.alicdn.com/kf/H23b462f34b914647adcdaab0c2bc646dv.jpg](https://ae01.alicdn.com/kf/H23b462f34b914647adcdaab0c2bc646dv.jpg)
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