For example, Mark 7:
33After he took him aside, away from the crowd, Jesus put his fingers into the man's ears. Then he spit and touched the man's tongue. 34He looked up to heaven and with a deep sigh said to him, "Ephphatha!" (which means, "Be opened!" ). 35At this, the man's ears were opened, his tongue was loosened and he began to speak plainly.
First, in the part you quoted, note that Jesus first took him aside, away from the crowd. In addition, in the lines leading up to the incident, you find:
31Then Jesus left the vicinity of Tyre and went through Sidon, down to the Sea of Galilee and into the region of the Decapolis. 32There some people brought to him a man who was deaf and could hardly talk, and they begged him to place his hand on the man.
So it begins with a group of people, the ones that brought him to the man. Now Jesus might have, like the televangelists, worked his wonders to the crowd, performed his miracle on cue and with lights and fireworks. But he didn't; instead he took the man aside.
And in the lines after the part you quote mined, it goes on to say:
36Jesus commanded them not to tell anyone. But the more he did so, the more they kept talking about it.
So he tried to keep it quiet, to avoid the very attention you claim he was seeking.
Now you can claim, that Jesus knew that telling folk not to talk about it would have the exact opposite effect and make them speak more of the miracle. But that argument smacks of the old Catch 22, either way, whether he did the miracles publicly or in private, it seems you would make the same claims.
I simply don't believe the passage supports your assertions.
Aslan is not a Tame Lion