Disturbed sleep could be secondary to many conditions like sedentary lifestyle, perceived stress or depression.
Following sleep hygiene would be the first step. Avoid screen time at night, fix a waking up time, avoid loud noise and bright lights in sleeping area. Reduce caffeine intake. Avoid alcohol and smoking.
Next Steps
Even after this if continue to have Disturbed sleep consult a psychiatrist for medications
Health Tips
Practice deep breathing techniques to relax.