Parents that are overprotective/helicopters/toxic

I would first try to understand where it is coming from. If it is from a place of legitimate love and care for your well-being, then you may want to try to see it from their perspective and determine if it is undue or unreasonable. Since you've used the word toxic, I have to assume that it is a very drastic method of parenting but if it is from a place of love, perhaps you can have a conversation with them to help them understand that you need more space as an individual. They may be under the impression that the same approach that they've used since you were younger is still the right way to go. To put some of this in a bit of perspective, my parents were abusive physically, verbally, and emotionally, as well as manipulative and controlling. Between each other, but this extended to me in such a way that even if other parents called my parents to accept full responsibility for me to go to a concert or something, my parents would still refuse. This went on from about 13 to 16 when I decided to leave home. Now, there is a great deal of risk and responsibility with this choice that many simply do not have the stomach for. I struggled and did some things that I'm not proud of. Couch surfed, slept in parks,... homeless essentially and some years shy of adulthood. Luckily, I always managed to keep a job thus I could be somewhat financially independent. All things to consider. Even to the extent of, can I deal with the toxicity or is it time for a drastic change. Good Luck!!