pagination with filtering - issue in pagination goes back to unfiltered data

Hi all,

I want to show all records in index.blade.php, at the same time I wan to allow users to filter results based in certain criteria such as country etc.

I was able to implement filter and pagination but I have once issue :

When the user filter something , pagination does not pick the filtered result except in page #1. Then it will go back to unfiltered data,

here is the code in controller

    public function index(Request $request) {
        
        if ($request->has('country') ) {
            
            $members = Member::where('country',$request->country)->paginate(5);
        
        } else {
            
            $members = Member::paginate(8) ;
        }
        
        
        return view('members.index', compact('members'));
    }

in index.blade.php .. the code to send filtered info is :

form method="get" action="/members">

    <input type="checkbox" name="country" value="Oman"/> Oman <br>
    
    <input type="submit" class="btn btn-default" value="Filter">

 </form>

please advice how can I keep the pagination linked to filtered data