. Just kidding lol. I know how you feel, my first tank (my aunt got it for me when I was ten and the workers screwed me over) was a 1 gallon corner tank with 1 mystery snail, 1 oto, 1 male betta, and 3 mosquito fish.
In the end, everything but the betta died. 2 of the mosquito fish and the oto died of stress because I didn't change the water and when I did, I didn't always use dechlorinator... The mystery snail was alive, but I thought it was dead and flushed it. The betta lived until he jumped out during a water change and messed up his spine... Long fall. And I stepped on my last mosquito fish.
Oh and I had no filter. Just an air stone.
I hope I can be of service in your next thread, and I am glad you aren't the only one with the bug.
Glad to have you, - Raymond