This seems more or less my story... I had a 10-year relationship and lived together, and now I've been alone for almost two years... I understand very well how you can feel lost sometimes, or have negative thoughts like having wasted so much of your youth with the wrong person. In reality, those journeys together and this one you'll have to do alone for now are always useful for learning different things... Remote working in this sense doesn't help you have new opportunities. I think one of the few things that doesn't make me feel isolated at all is being able to talk to neighbors, and by randomly taking the dog down, you can have a minimum of conversation. I try to see the few friends I have left and try to focus on my work and also cultivate hobbies or try to learn new things. I don't actually think it's good for me to be single for long, and I think if it's hard for you too, the only advice I can give you is to find time to go out, to cultivate that time so you can meet new people, in the hope of even starting a friendship... I know it's not always easy, or that we want to do it, especially because investing your life for a long time in a relationship that then breaks up is truly like mourning, I think. Everyone has their own time, but you also have to give yourself the chance to find happiness again, with other people. I can tell you that after two years, I still have feelings for my ex-partner, but I know that life goes on, and we must give ourselves the chance to find other paths to happiness and serenity.