After knowing somebody is hacking my account How can I recover my WhatsApp account

Here the answer depends on how the hacker hacked you.
- QRLJacking, WhatsApp web attacks - Both these methods are basically the same. This hack is done with your WhatsApp web,hence its easy to counter. In this case you will get a persistent notification in your phone about active WhatsApp web account. Click on it and select logout from all computers. Watch the video bellow.
- SS7 attack,Mac address spoofing � This is also easy to counter. This is because we will be logged out of our account. To fix it just re enter your number to get the OTP message.
- RATs and spy apps � These are the most difficult hacks to fix. I have written on how to stop these softwares in an another question. I will copy it here for you. Following steps works on most of the RATs and spy apps. They are,
- Delete any .apk file you are suspicious off.
- Go to settings, then � App management� in phone. Then click on the � Running � tab. Here you can see all the active services. Look the list carefully . Look at the left side of each app. There you can see their size and time they have been in use.
- Check out all of the apps in Google to verify that they are necessary. If you find anything unsual click on that and then click stop. Then go to the �Downloaded � tab near the �Running � tab and select the app name you noticed in the running tab,click on it then click uninstall.