I’m (28F) I’m thinking about leaving my 2 year relationship (33M) and going back to my home country ASAP

I (28F) had a fight with my boyfriend (33M) again.
For context, I’m not in my home country, so excuse my poor writing quality.

My mom came to visit me for a couple of weeks. Just today she left and I’m very sad, I feel alone again…

In order not to feel like this today that she left, I wanted to do something with my boyfriend (to have his emotional support and company) and I asked him if we could do something together, he said no because he had a lot of work (he always has a lot of work).
Afterwards I told him that we could take the dog for a walk (15 min. Max), he said “mmm, I don’t know, maybe” with a tone that he didn’t want to go at all.
I felt bad because I just wanted a little quality time together and to feel loved and accompanied, but did not insist, just shut down.
Because I felt very bad at that moment I started crying and he told me “why are you crying, for your mother?” I told him it was because everything was going to go back to how it was before my mom came and he was very offended. (The usual thing is, smoking marijuana and working all day. No spending quality time together or going on dates or even walking the dog for 15 minutes, normally I do want I want by myself and with the friend I made since I’m here.)

He told me “if you feel so miserable here, why don’t you leave.” When he said that I didn’t answer him and we stopped talking for a few hours. Then I (emotional and angry) went to his work desk and told him “why whenever something like this happens you just ignore me”, to which he responded “because I have important things to do, a lot of work and you only cause me problems, I already have a lot on my mind and a relationship is not supposed to be like this.” After that I felt worse because I don’t know what he expects of me, I feel like I’ve been super understanding and the guy can’t give me the bare minimum.

After that I didn’t say anything to him, I just left… He felt bad for what he said and made me dinner, I still didn’t say anything to him and I even went to sleep in the guest room (I’m still here rn).

I’m seriously thinking about walking away and leaving this relationship, but I don’t know if I’m overreacting and should I hold back?

He is a good person and I feel like he loves me, but his priority is his work and marijuana makes him even more distant…
Also not by any meanings I’m the perfect girlfriend, I tend to be very emocional and maybe I should be? I’m confused.

I would like to hear your opinions… maybe I am wrong and just overreacting?