We need to give him more players near his level, not break his back with the burden. It's the kind of game every single star player we've had from the mid 90s onwards has experienced. The profile of game where, even when not at his brilliant best, his own star quality gets starkly highlighted, where he starts getting the sensation that he's better than the other 9 outfield teammates put together; a sequence of these games, a season, maybe two, and he's looking elsewhere, higher.
Now imagine if he has such a game, next game, the guy on the other wing, Salah outdoes him. The game after, he's rested, Lucas Moura (a guy can dream) comes in, and hits the winner. That's the environment you need to create for trophies and just as importantly, to keep your star players grounded, tethered, here.
I've seen Owen, Gerrard, Torres, Suarez all have these games. The only one who stayed was the only one who had a reason to off the pitch.