Serious question about an*l

I bought my first dildo because I was curious-to keep it short.
Anyways I tried, hoping that I wouldnt like it that much -BUT…- I didn’t like it one bit. It just feels like have to take a sh*t any second. It feels alright sometimes for Split seconds when I tried but that’s it.
How do people actually get off from an*l or is that all a lie?
The thought of it still makes me horny but when actually doing it I get nothing from it.

(DM if youre not comfortable answering here)