I would even take a bet and say that Neuer will still be playing in four years from now! I don't know whether he would still be the first goalkeeper at the next World Cup, but I do believe that he will still be an active professional goalkeeper.
I have to agree with you, as since 2019 I have seen news that Bayern would be looking for another goalkeeper to replace Neuer after his retirement, but that never happens. In fact news about Neuer's retirement dates back to 2016.
But, on the contrary... Neuer is still active and being one of the best goalkeepers in the world.
Regarding injuries, goalkeepers have a low risk for this, one more reason to believe that Neuer will continue for a few more years.