It really depends on state law. In some states, good cause for quitting must be connected with the work, attributable to the employer, or involve fault on the part of the employer. In other states, you may qualify if you if had good personal cause for quitting or compelling family circumstances. These might include illness (yours or an immediate family member's), sexual harassment, domestic violence, or relocating with a spouse whose place of employment has changed. The only way to find out if you qualify for benefits is to file a claim. If you quit, you will have a hearing with a claims deputy who will hear your side of the separation, and your employer's side. Then they will make an eligibility determination based on the state's unemployment law.

Depends on the situation. If you can prove constructive discharge, you can get unemployment.

No.

What if you quit due to medical issues? Basically the job became too stressful and was affecting your physical and mental
health. You still want to work and are actively looking for a new job, but that particular job was not a good fit due to the stress and hostility in the workplace.