Hello
There is some legal issues with it.
But this article will help !!
[link|https://consumer.huawei.com/en/community/details/Tips-Tricks-How-to-Enable-Call-Recording-on-Your-Huawei-Smartphone-with-EMUI-9-0/topicId_10325/|Call Recorder for EMUI 9.0+|new_window=true]
[link|https://forum.xda-developers.com/t/call-recorder-for-all-huawei-model-android-pie.3926346/page-20#post-83653079|Call Recorder for EMUI 10.1|new_window=true]