Is working out supposed to feel like this?

I started doing cardio for a couple of months, 3 times a week (25 minutes a piece), it was annoying and i really didnt like but sure whatever i pushed through the boredom.

The REAL shit started when i actually worked out (we have workout machines in a nearby park), for almost 3 months im doing 20 minutes workout a day (5 times a week) and every. single. time. it feels like its getting more difficult to do than before.

I always heard stuff like "it gets better over time" or "your body just needs to get used to it"

but i dont feel anything like this, when im done i feel miserable thinking that i gotta do it again the next day, every single minute of workout i do feels so much longer than its actually is.

Im not silly(hopefully), i know how to workout probably, i made sure to look it up beforehand so as to not break my bones or something and the machines clearly describe with a manual printed ON them how to use them.

Is this it? is workout always gonna feel like shit? Am i just doing it wrong? Was the euphoria or adrenaline you are supposed to feel just a silly or or a thing i just dont get?

apologies is this is the wrong community i just dont feel like there is any else i wouldnt be like, laughed out of