Hi guys this is my plant! Ive had it about 6 months now. I repotted it last month because the soil was gross and when I repotted it, it had the brown spots on the green leaves as shown. It has had them for awhile and hasn’t really spread so I was wondering what it was? Additionally after I repotted it and watered it the one leaf turned yellow very fast and hasn’t started to die. What can I do and what caused it? I water it about every 2-3 weeks and its always near a window, also the roots look fine

