Mbappe doesnt have "goat level first touch". The reason why mbappe couldn't turn that into a goal scoring opportunity is he choose to control the ball instead of hitting the ball further so he could continue his run and not delay himself a goal scoring opportunity. This is basic stuff
Any top player is able to adapt in any situation. If the goal scoring opportunity has gone, hold up play for team mates to arrive. He made a bad first touch, bad decision to squeeze a pass through a wall of defenders and end up losing possesion when trying to beat a player.
This is why Bellingham should instead focus on camping in the box for tap ins like he did last season. Becoming a one trick pony like Haaland will boost his goalscoring by a mile.