iMac Wifi Keeps Dropping

My Wifi latly has been dropping very often, I need to turn off and on my wifi on my iMac.

First I thought it was my router, but i cheked my other devices and they had a perfect connection.

The frequancy of wifi signal droping is very often, sometimes the connection drops after 1minute of succesful connection.

Is my wifi card on its last breath? or is a software issue?