What are the impact of leaving one‘s job vs. Fired vs. laid of

Hi there,

Beyond the obvious what are the impact and differences that one can expect from its company when 1. leaving one‘s job 2. being fired for let‘s say professional mistake or being 3. laid of ?

Assuming one‘s do not re find a job within 12 months is there any differences in terms of government support obe can have access to?

let‘s say the person has:

• a permit B/ permit C holder (not Swiss)
• has been employed for more than 12 months