Best Way to Crypt a Msfvenom Generated Windows Backdoor/Paylaod to Bypass Antivirus

I would like to know if there is a way to crypt to bypass antivirus a payload/backdoor generated with msfvenom.

I searched google but its not clear to me.

I read about encoders and all that , but the only 64 bits encoder that i find in msfvenom is x64/xor(i tried it but avast detects it still) , because i want to test on 64 bits virtual machine with avast installed on it.

When it comes to windows defender its pretty easy to bypass it but avast always find it and move it in quarantine.

Is there a way , considering i only test on 64 bits machine ?

Thanks.