After checking further:
Run4ever is a server-side game (Laravel) it can't run as a static HTML5 embed on itch unfortunately. But I hear you on the trust issue! I've added a guest demo mode at run4ever.win/try where you can try the game instantly, no account needed. I'm also the sole developer — you can see my profile at marcosmendes.eu. Thanks for the feedback, it genuinely helped.