How do I better my relationship with family all over again?

As the title says I'm 18 and my relationship with family is all bad, I'm not gonna go too much into detail but ever since the pandemic everything has been fucked up. Super antisocial and just really bad I noticed I was actually kinda like a glue keeping everyone kinda together in the terms of some family members like my uncles and cousins since now no one even talks to anyone no more and realized it was cuz of men I honestly want tverything backs to how it was again where everyone got along and everyone liked each other, for example my mom and dad aren't the most like a blessing people so a lot of family members actually dislike my parents.

So a lot of the time they kinda just see us as "their" kids if it makes sense, but it's lowkey sad before when I had a solid relationship with my uncles and cousins every thing was so good and smooth I swear its as if i was the ​glue cuz now nothing is how it is, it's like if I'M not the one to better things and basically make everything better again with my family, NOBODY is gonna do that.

But yes how do I better my relationships with family again? I went through a lot of stuff mentally so that's one reason why it was so bad in the first place but I'm way better now and seen all the damage that's done to the relationships in our family nd wanna get it back, with our cousins we don't talk anymore at all it's as if we don't even know weachother also with our uncles and aunts and stuff it's honestly sad af.