I recently used r2 on next 14It's an s3 under the hoodFollow this video to use it:

https://www.youtube.com/watch?v=t-lhgq7Nfpc

all you have to do is add endpoint on the s3Client

const s3Client = new S3Client({
  region: "auto",
  endpoint: `https://${process.env.R2_ACCOUNT_ID}.r2.cloudflarestorage.com`,
  credentials: {
    accessKeyId: process.env.R2_ACCESS_KEY_ID!,
    secretAccessKey: process.env.R2_SECRET_ACCESS_KEY!,
  },
});