I need 2 filter likes Filter 1, filter 2when over select filter 1: I want to show LG AND SONYwhen over select filter 2: I want to show a bike and car

This can be achieved with the help of “only relevant values” in the dropdown. All you have to do is add both the filters- filter1 and filter2. And then in filter2, use to show only relevant values. This way, filter2 will have only those values which correspond to the value selected in filter1.