This is how my login and authentication works

Check for cookie on request

if cookie doesnot exist, send login page ( login )
1) check for credentials
2) if valid, set username's JWT as cookie
3) reload page
4) proceed for authentication

If cookie exist, decode JWT ( authentication )
1) check username
2) if username exist on database, send user panel

Anything wrong with this ?? What is the better way to do this