Test your compression. If reasonable, likely not the belt. Typically timing belt failure results in a totally different sound when cranking over and not starting..like no load.
Much more common issue is fuel pump. They just die. To see if this is it, have someone hold brake, and crank over the engine, while you pound heavily on the fuel tank lowest point, with your fist. You do not want to dent, just agitate.

Next, test if you have spark.
These are some of the common issues that cause no start.