It took me way too long to get the S3 image bucket uploads to work. I tried CloudFlare too, but somehow I just couldn't seem to be able to get it working.

So I decided to go for Supabase storage in the meantime.

This is not ideal as egress and storage costs are much higher compared to AWS S3, but at least this buys me some time to figure it out at my own pace and the product does not have to be delayed because of a simple image-uploading feature.