How to find my Metabase application database details?

I am unable to find the details of my metabase application database. Someone else setup the metabase cloud and I am trying to move it to self hosted environment. How can I migrate my data from metabase application database to my self hosted database?

Here is my diagnostic info:

{
  "browser-info": {
    "language": "en-US",
    "platform": "Win32",
    "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 Edg/121.0.0.0",
    "vendor": "Google Inc."
  },
  "system-info": {
    "file.encoding": "UTF-8",
    "java.runtime.name": "OpenJDK Runtime Environment",
    "java.runtime.version": "11.0.22+7",
    "java.vendor": "Eclipse Adoptium",
    "java.vendor.url": "https://adoptium.net/",
    "java.version": "11.0.22",
    "java.vm.name": "OpenJDK 64-Bit Server VM",
    "java.vm.version": "11.0.22+7",
    "os.name": "Linux",
    "os.version": "5.10.209-198.812.amzn2.x86_64",
    "user.language": "en",
    "user.timezone": "GMT"
  },
  "metabase-info": {
    "databases": [
      "postgres",
      "h2"
    ],
    "hosting-env": "unknown",
    "application-database": "postgres",
    "application-database-details": {
      "database": {
        "name": "PostgreSQL",
        "version": "14.7"
      },
      "jdbc-driver": {
        "name": "PostgreSQL JDBC Driver",
        "version": "42.6.0"
      }
    },
    "run-mode": "prod",
    "version": {
      "date": "2024-02-12",
      "tag": "v1.48.6",
      "hash": "b8818f9"
    },
    "settings": {
      "report-timezone": "Asia/Kolkata"
    }
  }
}

"application-database-details": {
"database": {
"name": "PostgreSQL",
"version": "14.7"
},
"jdbc-driver": {
"name": "PostgreSQL JDBC Driver",
"version": "42.6.0"
}
},