Avg will not install

It has done this many times now and I cannot  fathom out why. I've just had a new SSD drive installed in myiMac running High Sierra OSX 10.13.6! Never happened before on my oldhard drive, but it needed replacing, as it was broken.

I have downloaded the AVG Antivirus 3 times now for my iMac running OSX 10.13.6 High Sierra. It has a 1TB SSD drive and 8 GB RAM, still keeps saying istallation failed! Is AVG able to help me resolve this ASAP?

Hello Collin.
We'd be glad to help with installing. 
Please make sure you do not have a confcliting antivirus software installed. Could you share a screenshot of the error message you receive?

Glad to know that, Colin. Appreciate your efforts.
Thank you for updating the status. Have a great day. Stay safe!

Hello Collin.
We'd be glad to help with installing. 
Please make sure you do not have a confcliting antivirus software installed. Could you share a screenshot of the error message you receive?