Hi @janet099k ,
Try using the phone in [https://safemodewiki.com/how-to-turn-safe-mode-on-and-off-in-huawei-p9/|safe mode] and check if it works OK or not.
If it does then a ''downloaded'' app is the cause of the problem. The trick is to find out which one. You will need to uninstall each ''downloaded'' app, one by one and test the phone in normal mode between each uninstall to see if it works OK or still freezes. When it works OK then the last ''downloaded'' app that was uninstalled was the culprit. A ''downloaded'' app is one the you ''downloaded'' and installed on the phone and wasn’t pre-installed when you first got it.