"Why does nothing go the way I expect it to..."
Because you act and think like a shitty person and a shitty parent, so your expectations are correspondingly shit. If you were less shitty at either of those, things would go your way considerably more often. :-)
I mean, Makino is the same and things are going pretty well for her.
Even disregarding the fact that Makino (no doubt because of her upbringing) often exaggerates how much of a scumbag she actually is, the key difference between her and her mother is that Makino does not have children and does not abuse her parental and financial authority over them. Being a shitty person and a shitty parent is a lot worse than just being a bad person, so I don't find it surprising that things are going better for Makino. :-)
Disagree. I don't think Makino's upbringing or her not being a mother somehow lessens or downgrades her shittiness or how scummy she has consistently been, her mom is awful too but I don't see her as worse than Makino (or better. They are just shitty). The only real difference is Makino got lucky and fell for a person who needed someone like her as a partner.
Makino has not been that bad to others, without provocation.
She blackmailed her sister and set someone on a date with a potential murderer.
Like, don't get me wrong, I found those hilarious but they were shitty things and she did them. Makino is a scumbag because she doesn't care about anyone else other than Mashiro and then herself, she's a really entertaining Main Character and her adoration for Mashiro makes her endearing, but she's still a shitty person.