@Nonog so I don't know if you want somebody to tell you what it is or to help you learn how to identify, so I will go step by step.
first step : try to now what family you're dealing with.

Here it's a female that is not on a web, so it's most likely not a web-weaving spider.
From the general shape, the eye pattern, and the behavior, you can guess that it's a spider from the Thomisidae family, aka crab spider.

@Nonog then there are a lot of species, but your location can narrow it down !
Base on your picture I would say it's very similar to Ebrechtella tricuspidata, so that might be a good candidate.