My iMac doesn't connect to the internet when I wake it from sleep

Hi all,

I have FiOS as my internet provider. My brand new iMac doesn't immediately connect to the internet after going to sleep. I had been working remotely. I had an older model iMac here and at one point had the iMac and four laptops running at the same time and I never experienced this. When I went back to in-person work, everything went back to the office so I bought a new iMac in September. When I had that issue, the tech support had me return the iMac, I had the access point replaced and changed all the ethernet cables. When I received the new replacement, the same thing happened. I normally keep wifi off. I have to toggle the wifi back on to shorten the time I wait for the internet to come back. When I leave the wifi on, the same thing happens and I have to toggle the wifi off and on. My iMac is a 3.8 GHz 8-core Intel Core i7 and is running Big Sur 11.6 and I have searched the internet to see that people have been having this issue for years but no solution has been provided. Any ideas?