I want a portable one, for 150-200 $. I wanna visual observing
For $200 you're probably limited to under 100mm of aperture. But, if you want to do visual observing of deep-sky objects, that's pretty low. You could see the Moon and planets just fine, but galaxies and nebulae are a lot fainter, and you need as much light-gathering power as you can get to see them well. Light gathering power grows as the square of the telescope's aperture diameter, so a little bit more money spent will improve your view dramatically. I'd definitely suggest aiming for something with at least 100mm, or 4 inches, diameter.
Bambusman's suggestion of the GSO Dobson 200c is a good one.