Need perspective on breakup, guilt, and overthinking responsibility

I recently went through a breakup and I’m struggling a lot with guilt, confusion, and obsessive thinking. I want outside perspective because I don’t trust my interpretation of things right now.

Im 20 and shes 19 currently. Male and female.

During the relationship, I wasn’t always consistent emotionally. I often acted based on my own comfort in the moment rather than fully showing up for her needs. Looking back, I can see that this likely made her feel uncared for or frustrated at times.

She has also been under a lot of stress in her personal life, including a difficult home environment and emotional strain. In moments of frustration during the relationship, she would sometimes say things about feeling overwhelmed, impulsive, or like she might act without thinking when she’s at her limit.

After the breakup, my mind has been stuck in a loop where I feel responsible for her emotional state and future actions. I keep thinking that because I didn’t show enough care or consistency, I’ve caused permanent harm or that I’m somehow responsible for whatever she does next. I know this thinking is probably distorted, but I can’t fully stop it.

I also recognize I have my own issues, including unhealthy coping patterns and emotional inconsistency in relationships. I’m trying to separate what is actually my responsibility from what is outside of my control, but right now everything feels mixed together.

Tldr

Important!!!!: dont react if u have a porn addiction or if you think porn is normal. Im not judging u but just dont react. I need people who truly think porn is bad and it fucks up how men think and is the reason why men are like this. Also dont compliment me or anything i just need advice. I need someone who is truly able to love someone to give me advice. So if u only see ur partner as attractive and only want them and are very jealous of everything and if u agree with the porn thing i mentioned then react. This whole paragraph is from ai from my chat with it but i dont have time or energy to adjust everything. U can ask me questions ill answer everything i just need help. I wanna know what the truth is and what i can do