Сamera itself creates points | cant control

As Mylenium says, you should probably do some reading on the basics of what's happening here. It'll serve you well going forward, as this is something you'll probably run into a lot.

It's not random; After Effects is "helping" by adding Auto-Bezier to your movement. You'll see this same behavior anywhere else when you add a third point that potentially affects the movement between the first two.

Here, a solid moves in a straight line between two points:

When a third point is added, AE assumes you want a smooth transition toward that new direction, so it rounds the path slightly:

This is the default behavior, though you can change that. If you never want this to happen, you can go to Preferences > General and check Default Spatial Interpolation to Linear.

If you just want to change this instance of it, you have a few options.

A. Select the keyframe(s) that aren't behaving the way you expect. Right-click on one and choose Keyframe Interpolation. Set Spatial Interpolation to Linear. For any keyframes set this way, the object will move in a perfectly straight line between those points.

B. Using the pen tool, adjust the motion path so the object moves the way you want. This is my preferred option, as it givs you the most control. You can intentionally curve a motion path between points to suit your taste. You can have rounded corners, hard corners - whatever you need. On a camera, you have the extra complication of working in 3d space, so you'll likely need to enable multiple views to get the right perspective on your motion path.

Good luck!