My wifi says it is weak what do I do

Does it say “Weak security”

If so you need to increase wifi security in the router settings to WPA2 or better. Or if it will not go that far, buy a router that will allow it

Perhaps this link will help...

Recommended settings for Wi-Fi routers and access points - Apple Support

I’m getting the same message I’ve never seen this before. Hopefully will figure out

So how far away are you from the router that is providing the WiFi? Have you tried restarting your WiFi router? The message means exactly what it says. Your WiFi signal is weak.