Glithcy/flickering lighting

My Scene has a really weird flickering effect when rendered in Cycles.
I’ve already tried multiple denoising solutions and none have worked.
how can I fix?
Thanks!

.Blend file:

Welcome :tada:

hmm… expired link after only one hour ?? You may want to spent a liitle time more here in the forum and for example try the search function (top right :mag:)… and may even find a similar problem and answer… at least then you could upload directly here on BA (there is a little time hurdle for new users to prevent spam…).

Trust me, I’ve tried.

What did you tried ?? Joined 2 hours ago… seen 6min… views: 2…

Search for "flickering light* 50+ results:

https://blenderartists.org/search?q=flickering%20light

No lighting or material exists in the scene. Scenes that cannot be rendered.

The background image used by the camera cannot be determined due to missing attachments, but the flickering problem may be an image problem used in the background.