Basically i think its hard to use sketchup in chrome but i had a trail licence so like how do we use the sketchup for free since i want to try and make a custom track and my friend told me to come here
What trial license do you have?
There is a desktop-application form of SketchUp available for no cost. The most recent version is named SketchUp Make 2017, and is listed on the downloads page along with other choices. The Make version is not licensed for commercial use, but it sounds as if your intent is for personal use.