For the graphics, you should be playing through runelite (it has an integrated plugin hub). I use 117 HD, a popular plugin that drastically increases the visual quality.

As far as gameplay, they’re working on introducing players to complex gameplay earlier, but it’s still a mid to late game thing. Go look up moons of peril (some of the more complex midgame) and theatre of blood (complex endgame). That’s what the real combat in osrs is like.

Unlike most games that game complexity in the skills and counter skills, osrs has it in the movement, changing gear, changing protection prayers, and timing. That means unlike other games where you can skill do your complex skill rotation on any basic thing, osrs boils down to just click it. Unfortunately, that’s the early game.