I (26F) have had a whirlwind of a year and i really don't have a will to function anymore

So basically starting with the beginning of the year when I lost my grandmother..a person I was super close with, lived with her and losing her was really really tough on me. I still see recurring dreams about her even 9 months later.

Then I had a major fallout out with my college friends and they resorted to trying physical altercations with me and bullying and I had to live outside my hostel due to constant threats. They spoilt my relationship with my roommate as well..

After losing my friends as well my boyfriend and I had a falling out because I didn't want to have sex before marriage and he said he wasn't able to live like this anymore...We haven't talked in over 1 week now..I miss him but we did the same in May and didn't talk to me for over 2 weeks..

I had a very important exam coming up for which I didn't even check answers for after the exam because I was worried on how i performed (in aug)

Then in aug (last month) just before my exam one of my dogs developed tick fever and is still undergoing treatment

To top it all,I had a female online friend who stopped talking to me because I couldn't be available to hear her relationship rants all the time.. even tho I still kept making time for her as much as I could even when i should've been studying...I never told her half of my problems and even when I told her about my dog's health she didn't really once ask me if i was doing okay. Her conversation would say kaisi hai tu and then she would proceed with her relationship issues. Didn't even wish me all the best for my exam and after it didn't go as per I expected all she did was asking if my exam was over so she could go on with her rants

Now I'm left with no interactions with anyone. I feel sad and distressed. I remember everyone and I cry. Life has really torn me down bad and I have no shoulder to cry on..

I feel deeply sad it's like I can't keep people however hard I try.. I try to understand everyone's pov and end up making myself the villain. I've lost the will to do anything

Tldr; lost my grandmother,lost my friends to one of them betraying me and cutting me off from everyone,lost my online friend after I was unable to hear her rant about her relationship,lost contact w my bf because he wants sex before marriage and I don't,worried sick about my dog's health and also stressed af about my recent exam results..