You obviously don't need any lessons at this point because your Spanish is already good enough to be able to communicate in the real world and that's the reason we don't offer an actual Spanish course at this point, but I'm still going to give you a list of interesting resources that have helped me a lot and continue to do so when it comes to improving my knowledge on the different languages I speak.
As usual, feel free to use those you enjoy the most and the ones you can perfectly understand. And finally, and even though you can perfectly communicate, remember that comprehensible input is what you need to keep getting better, output is just a consequence.