Poco F6 slow charging

Been using my Poco F6 for the last 3 months now. Suddenly I no longer have fast charging mode even with the charger provided in the box.

Nothing new installed and nothing changed on how I use it. Mostly playing YT while I work.

Any idea what's wrong before I take it to a shop to get checked and repaired?

Been using my Poco F6 for the last 3 months now. Suddenly I no longer have fast charging mode even with the charger provided in the box.

Nothing new installed and nothing changed on how I use it. Mostly playing YT while I work.

Any idea what's wrong before I take it to a shop to get checked and repaired?