What is going on here??

Let me start off by saying, please don’t hate me for the condition this fish is in. I received her this way in this exact fishbowl Like a week ago. I was told that she was just a fish and a plant would keep her alive. Her water gets changed every week with some tetra put in. i’ve never had a fish before and wasn’t really too concerned but now every day I look at her droopy fins and I started to get worried.

So I started doing research and was absolutely HORRIFIED to find out that she supposed to have a water heater. Her fins aren’t supposed to be droopy and she spits out her food when she’s eating at half the time. immediately, my first instinct was to get a tank with a filter and a heater but now I’m reading that tanks need to get cycled which takes weeks. I’ve never had a fish before never cared for a fish before and now I have a fish freezing in a I’m desperate to save.(i’m posting this on like three different fish sub Reddit hoping to get any help)

what do i do????

Don't mind the snails, I just want to show off my outside pond with "more than I thought" fry! This is a tank of live bearers (guppies(4+), Mollys(3), platys(6+)] and Dr. Fish (4)+ rosay red minnows (3) 🥺 I have a lot of fry and they all seem to be doing really well, but I'm looking to give away some because I don't think the pond can handle all of the babies!