I just purchased the Lenovo Flex 3 Chromebook from Woot in early Aug 2021. I returned the first and received a replacement and they both have issues. There is a bug with the Chrome operating system the disables the touchscreen from working and there is NO fix. See this thread from Lenovo chats Touchscreen on a Flex 3 stopped working after 2 hours use-English Community
It’s unfortunate that this Chromebook is flawed as it a good little computer.