Mac Desktop

I have accidentally turned off bluetooth on my mac desktop (late 2011, Catalina) and when I managed to turn on back on, my computer would not connect to any wifi (connection failed appears every single time). Also, I went into recovery mode and did a first aid on my internal disks and I found an error and it fixed itself; but I still couldn't connect to any wifi. My router is like 4 feet away from my mac and my internet is working just fine. I don't how to fix this. Can anybody help me??