First, just try restarting (turning off and back on) the phone. It is really common for files to not show until after this is done. Now, should that not work, while there is no guaranty that you can get them back. Deleted does mean deleted. There are a few apps/programs out there that 'may' be able to help you recover the data.
A few of the programs you could try would be... DiskDigger, MobiSaver, Android-Recovery and Tenorshare. They are all data recovery apps/programs. There are many others out there, so check around and see which you would rather try. There is also one called RECUVA, that I have heard is free, which you could try.
One important note though, most of these programs are not free. They may say they are "free" or have "Free Trials" and "Free Downloads". Yet to actually recover your data, and get your files back, you may be have to purchase the program/app. Just so you know.
NOTE: For future reference, I really would suggest backing up your data to a computer or cloud. Often. Better to spend the time doing that, rather than to be out all that stuff if the phone dies, things get deleted/erased or it gets stolen.
When you delete data on Huawei phone, they would be first moved to the trash bin and the device will mark these files as inactive. So, they still exist on your phone but are invisible and replaceable. And the system will really erase them if you add some new files to cover them. Thus, you should recover the important data as soon as possible.
There are various programs available for recovering lost Android data, MobiKin Doctor for Android , which is a full-featured Android data recovery ability and easy-to-use interface. After you have downloaded the software, it becomes a matter of just some clicks to achieve your goal. There will be no limitation as to which kind of data you can recover. Be it text messages, contacts, call logs, photos, videos, audio files or documents.