Which Ending of Undertale I got? and What remaining endings I have now?

I have just completed Undertale, but I am not sure which ending I got. As per wiki, I must have gotten The True Pacifist Route Ending. But I did not get any epilogue as shown in The Wiki page.

I killed Toriel(didn't know consequences), I am friends with Sans, Papyrus, and Undyn. I spared Asgore, but then Flowey killed him, I defeated Flowey and spared him too. In the end, Flowey just popped out of nowhere and told me to try to replay the game without killing anyone then he might spare The King.

Now I am really confused, Where is the epilogue I am looking for, which ending did I get, as it might affect my next run. I want to play and end this game in as many possible ways as I can. Also, I have the game off steam and I have read that reset or deleting saves won't help me as the steam cloud will resync them again.

Which Ending is this and which next endings I can achieve?