Hi,
Because it is random it may be hard to isolate so try the following, one at a time and allow a bit of time to see if the first suggestion resolved the problem before trying the second if it didn’t.
i). [https://www.hardreset.info/devices/huawei/huawei-honor-10/wipe-cache/|Wipe the cache partition] and then use the phone and see if the problem still occurs or not.
ii). Start and use the phone in [https://safemodewiki.com/how-to-enable-safe-mode-on-huawei-honor-10/|safe mode] and check if the problem still occurs.
If it doesn’t 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. When it works OK then the last downloaded app that was uninstalled was the cause. A ''downloaded'' app is one that you downloaded and installed on the phone and didn’t come pre-installed with the phone.