Tax filing for employment & side income

Title, I have a full time job and "side income" that I play and sell online game currency on a gaming marketplace.

My side income got me Rm9k this year. I tried to register on SSM online but the system told me to walk-in but I am lazy as fuck.

My questions related to tax filing:

Does this count as a business?

Can I just add the side income onto my employment income and call it a day?