Hi! We run DailySounds, a free sound effects site: https://dailysounds.org
There are 1,150 sounds so far, including UI clicks and beeps, coins and power-ups, hits and impacts, explosions, weapons, sci-fi, horror, animals, footsteps and other foley, and ambience beds. Every sound has its own page where you can preview it in the browser and download it, with no account and no download limit.
The sounds are free to use in commercial games too. Credit is appreciated but not required. License: Sound License — Free for Personal & Commercial Use | DailySounds
The downloads are MP3, which every browser plays, so they drop straight into a PlayCanvas project as audio assets. We add a new sound every day.