Everyone has their own personal way of relaxing. These are just a few that I found are most common amongst fellow introverts.
Being Alone in Your RoomGiphy
Your room is your sanctuary. Your haven. This is where you can let loose.
Being Alone in NatureGiphy
The fresh air. That slight breeze tugging on your loose hair. A place to have for yourself.
Listening to Favorite Songs... AloneGiphy
Your fave music allows you to express yourself. Yet, being by yourself while listening to it can allow you to dance around your room or sing without the attention of others.
Reading and cuddled up with some fuzzy socks, sweaters, pillows, and blankets is probably the most magical feeling. (Forget about the pants. Ew.)
I know, personally, I love taking slow drives. Especially, through areas I don't know because of what you might find could be amazing.
Many people have different ways they choose to relax, whether they are introvert or extrovert. I know some of these ways are my favorite to do. They really allow you to take some time to either be with yourself or with your creative mind.