Whats wrong with taking it alone? Id say its completely up to you which ever you prefer.
I have to take the bus to school but my friend stopped taking it..Should I walk for 30 minutes or go on the bus alone everyday?
Ride the bus. I am sure you will not be alone. This would be the perfect opportunity to make new friends.
Neither one is a big deal. Why not take the bus alone? Or why not walk? 30 minutes is only a warm-up.