Sql replacement

Question

I learned sql and MySQL but there is a problem coming that I am not able to connect to server
Can there is another database like mysql so I will learned it quickly ?
The problem coming is
https://www.sololearn.com/discuss/1878801/?ref=app

Answer 1

PostgreSQL - Advanced open-source relational database.
SQLite - Lightweight, serverless SQL database.
MariaDB - A fork of MySQL (developed by original MySQL developers).
f You’re Open to NoSQL:
These are different from SQL but still great to learn if you're working with flexible data structures.

MongoDB – Document-based, easy JSON-like queries.
Firebase (Realtime DB / Firestore) – Good for web/mobile apps.
Redis – In-memory key-value store, great for speed.

What Should You Do Now?
If you're comfortable with SQL, PostgreSQL or SQLite is your best next step.
If you're more focused on flexible and modern data storage for apps, MongoDB is a great choice.

Answer 2

MongoDb