Years of isolation makes me feel like everyone is profoundly unrelatable

People lead such different lives from me and when I hear them talk about their lives I just cannot relate to anything they are saying. My life is devoid of any real connections and I am extremely isolated since a long time. I get extremely jealous of others and try to avoid getting to hear too much of how great other people’s lives are because it just reminds me that I am lacking the most important thing in life. I know i should feel happy for them but it’s hard to. I feel like if i keep living like this im gonna loose my sanity somewhere down the line.