Galaxy A20 won't turn on properly

I've had the phone for a while, today it just won't power on. I let it charge for about an hour, held both Vol Up + Power & Vol Down + Power several times, nothing worked. When plugged in, the charging icon will appear and stay that way until I unplug it. Checked out the charging port, it's in good condition.

I'm thinking about taking it to a third-party store to get it fixed but this website caught my eye and I'm seeking assistance from anyone here before I take it somewhere.