r in photoshop CC2019
 

Easy way, please, how to find the TOOL BAR OPTIONS in Photoshop CC2019

I personally keep the Toolbar to the default left of screen.
Tool customising options are viewable below the Menu bar after you select the specific tool.

Example: (Toolbar vertically to the left, Customising options horizontally above.)
Attachment 7102

However, to reach the base tool options (such as type of brush, etc.), after selecting the Tool from the Toolbar, then select (click) the Options icon as shown with a red circle below:
Attachment 7104

Then if the tool possesses any options, a window with options will pop-up as shown above.