How to reverse the current version of the Bitrix template if it is always cached?

Question

css

Tell me how to enable debug mode or some mode to disable caching altogether, so that you can see the source css files in the web inspector and work with them.
In dbconn I changed the parameter define("BX_COMP_MANAGED_CACHE", false);
But in the admin panel it says - The constant BX_COMP_MANAGED_CACHE is defined - the managed cache is always enabled.
Maybe some kind of restart is needed there, or I'm not doing it at all. In general, I need to somehow remove this caching altogether in order to fix validation errors and correct the layout, I always see that everything is loaded from chache .. Tell me how to do this. Thanks to everyone who responded.
I have not worked with this CMS before. I do not know these nuances.