is it possible to keep windows 7 when you buy a new laptop?.....I need one but don’t want win. 10
I don't know, but there are some other Windows folks here who may know.
There are still a few available on Amazon. Here's one:
https://www.amazon.com/P2520LA-XH51-Laptop-display-Intel-Windows/dp/B017D79I82/
Microsoft will stop extended support for Windows 7 on January 14, 2020. Your new Win 7 laptop will still have plenty of life left in it in 2020, but you will be running an abandoned operating system. Microsoft will stop patching security holes, and hardware/software manufacturers will eventually stop supporting Win 7.
In my opinion, buying a new Win 7 computer is a mistake. Just buy a new Win 10 computer and immediately install Classic Shell.