I cannot stress this enough. Communication is key! Similarly to what others have said. Set up a meeting with the founders and also have your team lead involved

I cannot stress this enough. Communication is key! Similarly to what others have said. Set up a meeting with the founders and also have your team lead involved. The fact that you are considering quitting means you have gotten to a stage where the answer to what you should do next is VERY important. So you need to communicate this so the company also has a fair chance of solving your issues to keep you around because they might be unaware of where you are psychologically. Something to keep in mind your with your team lead. He/She might not be aware of their negative impact. Managers see multiple sides of an organization and it is not to the benefit of the organization for all sides to have access to all the information about other sides of the organization. To deal with this, managers play politics. Not because they are stupid and evil, but in their minds to keep the peace for the greater good but sometimes it impacts people like you and demoralizes them. Knowing this, you should not go into your meeting pointing fingers, read everyone's actions up to that point as well-intended as possible and use the meeting as a discovery session where you acknowledge what they are trying to do, but these are the negatives of their actions and outline how this can be made better, so you can work better. The way they handle this meeting should be all the answer you need to know if you should stay or not.