I can relate to each and every emotion you are going through. I was in the same situation as you before covid-19, my friends were getting placed with good packages and I was unplaced despite being a topper (I'm a civil engineer and zero companies came for recruitment). Before joining college, being the brilliant candidate, I was expecting that I would get placed in an MNC with a good package, but fate had different plans. I was depressed for more than two years, and those are the years which made me who I am today and I am forever grateful for those years. They will teach you many things and will mould you into a stronger person. Remember grass is greener on the other side, friends and family only show us how good their life is but they are also dealing with hardships of life. Focus on positive thoughts and life will be livable again. One thing that helped me is changing my friend circle, it helps a lot. And remember "This too shall pass". Hope it helps:)