Sendin apk file as security file to friends

After I am sending an apk file to friends when they download it, they got a message “this type of file can harm your device” so it make my app unreliable and some of them are afraid to download it. Is there any form when they download apk file to be secure and to not have that message that this file can harm your device.

thnx.

No , Google's security attepmts to protect users. The use PlayProtect as part of that security.

I upload an app created with Mitt app in google play and it was suspended and deleted :frowning:
the message was “After a recent review, we found that your app Covid19Pz (appinventor.ai_besartosmani1.covidpz) is not compliant with one or more of our Developer Program Policies. See below for more information about your app’s status and how to correct the issue.”
What to do in this way to publish my app in store.

Google will disallow just about anything on Google Play / Youtube / etc. which has COVID-19 or Coronavirus in it’s title or content, to protect global citizens from scammers and fraudsters, and fake news.