Hi Diang,
Sleep issues and anxiety have been reported by several members in the group. You might find these related discussions helpful:

- Has anyone been suffering with post Covid severe insomnia?
https://connect.mayoclinic.org/discussion/severe-insomnia/
List of discussion on the topics of:
Anxiety https://connect.mayoclinic.org/group/post-covid-recovery-covid-19/?search=anxiety&index=discussions
Sleep https://connect.mayoclinic.org/group/post-covid-recovery-covid-19/?search=sleep&index=discussions

Did you have problems with insomnia or anxiety before long COVID?