I am a 26 M . We had a family gathering recently and everyone was having fun socializing, the kids were running around and playing. It was a pleasant sight yet it made extremely unhappy and depressed, I will explain why. 

Later that day when I went home I recalled that scene and I had a flash back of when I was a kid playing with my cousins and neighbor hood kids , having 0 worries not caring about anything in life, I was really happy back then . And  I looked at the current me, disappointed in myself and extremely unhappy. I feel like I have achieved nothing so far , I hate everything about myself and wish I can go back in time to the good old days. I have never found love or dated anyone , I graduated just before covid started and was jobless for a long time. My parents are in their 70's and and I know they don't have much time left. Due to covid I cut ties with many people and stopped going out.  I Remember that night when I had this roller-coaster of emotion and I Just cried for the first time in a very long time.

every year that pass I become unhappier and more disappointed in myself. Maybe the kids playing made me envious and wish I was in their place to forget about this life worries. I don't know if I have depression, or if it is time to seek medical help.