How can I pass a parameter in postman (or address bar) so that I can get it later in the controller as a property in $request?

Question

Laravel

Hello. I'm trying to drive the parameters into $request, so that later in the controller I can get it as $request->something. I try directly into the string, I try it through postman adding keys, the address bar looks like http://backend/test?key=value&key2=value2. But it does not get into the request, I get an error that there are no required parameters. The route tried to create views /testand /test/{var}, still an error. How to do it right?