It definitely setup a season 2 but the endings were still alll satisfying enough that if it doesn’t happen it’s not a massive cliffhanger. Like there’s more story but the conflicts in season 1 were resolved if that makes sense.
I think Mr Robot is one the best shows ever created in regards to not only the writing, acting, filming, etc. but also with how well it handles the sensitive topics of mental health and the brutalities of our modern society. That being said, I understand why a lot of people don't like it. Aside from being depressing and fucked up as hell a lot of the time, it kinda has to be watched multiple times to be truly appreciated. Every episode is packed full tiny details and clues as to what is really going on that are not meant to noticed on the first watch but give you an entirely different story the second time around. If you ever want to try it again maybe go into it with mindset that what you see right then is not necessarily the entire story, and that's kinda the point. Your supposed to be confused, frustrated, and uncomfortable because that is what the characters are feeling.
But yeah, Allice in Borderland was a lovely surprise.