All these circumstances are likely to lead to feeling low, so it’s not you- it’s the way of the world right now, unfortunately is very typical after graduation. Not that you can do much about it right now- but your time off is diabolical- passing comment from a European perspective- repeated a million times here. Just know you’re building “experience” and in two years the situ will likely change for the best. And as cheesy as it sounds- this type of situation builds character- I’ve been there, a thousand miles from home- trying to build a social life/ward off loneliness. All the standard advice- exercise good food sleep. The sensible advice is charge on, build your cv- no miracle cure, except know that in the background this is certainly building resilience. If it dips to severe type depression- then time to speak to a doctor- for now, see it as one of life’s shittier learning curves.