When I got laid off, people acted like I should shake it off and start applying the next morning. They didn't seem to understand that you're not just losing a paycheck, you're losing your routine, your plans, and sometimes a big part of your identity. I was angry, sad, and completely thrown off for a while. I'm still not fully recovered, and I'm lucky to have been able to find a new job rather quickly.
All this to say, if you're laid off, give yourself some room to be upset about what happened. That's not something you need to apologize for.