I’m stuck and need advice

So right now id say I’m a bit past being a freshly new player. I’ve defeated the fist couple bosses (Margit, Godrick, Rennala and most recently Starscourge Radahn). I’m currently level 65 and I’m working on a strength build. But since I beat Radahn and explored the eternal cities I don’t know what to do or where to go. I’m not sure if I should head towards volcano manor or if there’s somewhere else I should explore before. Or maybe I should grind and level up a little more. I’m really stuck and don’t know what to do. Any advice?