the emergence of fear of nervousness and anxiety

Complaints of fear of similar events, nervousness and anxiety after experiencing tragic events can indeed constitute one of the trauma symptoms (post traumatic stress disorder / PTSD). PTSD is a post-traumatic stress disorder that can be triggered by a traumatic event such as an accident or a life-threatening condition.

The PTSD symptoms are as follows:

Imagine the traumatic event
Avoid talking / remembering traumatic events
Mood and cognitive changes
Difficulty sleeping, concentration disorder, easily startled, careless or even self-harm
In addition to PTSD, your complaints may also be caused by other conditions such as phobias, acute stress disorders, anxiety disorders or adjustment disorders. Because the complaint has caused disruption in daily activities, you should see yourself a doctor to get further treatment in accordance with your conditions.

The doctor will ask for your complaint history, perform a physical examination or investigation to ascertain the cause of your complaint. If the complaint is caused by PTSD then the doctor can do counseling and cognitive therapy or prescribe antidepressant drugs to overcome your complaints.

Here's an advice for you:

Manage stress wisely
Avoid conditions that can trigger your complaint
Do positive activities such as exercise, work or worship
Immediately consult a doctor if the complaint persists or worsens
May be useful,