Should I change my flight

Long story in short, I have booked a flight from Ottawa to Toronto. Nevertheless, I don't there are two airports in Toronto. Then I booked a wrong one(YTZ). My friend and I haven't been there before. I will arrive at 18:43 and I have to go to YYZ for my next international flight (which will be departured at 00:30. I am so anxious rn and so scared to ruin my journey. Or should I change flight and arrive in tomorrow morning.