I love getting to the REAL REASON why your kid is shutting you out requires humility, openness, calmness, maturity and self-reflection which are likely traits you wish your kid would develop.
As long as you walk around cursing their generation, their interests, their style, their efforts, hormones, TikTok, Covid...
fighting with them and your coparent/partner, losing your cool, insulting them, saying you think they won't make it in the real world, saving them from their own consequences, being flaky, sending mixed messages, bribing, manipulating, and so on...
They are NOT GOING TO SHOW UP in their performance OR in your relationship with them, and as soon as they can get gone, they will OR they will continue to be enabled by the above and not launch period.