How small is small? And what are the numbers of free and used space?
I see there are HP Probooks with 64 GB total disk space. That can't really be called Pro, of course. But with careful managing of free space it's possible to run Windows 10 for quite a long time.
If careful managing isn't enough, a clean install with format might help for a while.
Run Treesize Free from https://www.jam-software.de/customers/downloadTrial.php?article_no=80 to see where your space hogs are. A common one is the System Volume Information folder, which is easy to clean. And for some, there are many files in temp-folders or they forgot to empty the recycle bin or run the occasional Windows update cleanup.
People who just want to use their laptop in stead of spending time in managing it buy a much larger hard disk.
I have a small space hard disk drive on my HP ProBook laptop with using windows 10. When the updates occurred my windows drive shows space running out issue.

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