It seems you’re on the WordPress.com starter plan, which unfortunately does not support custom themes or plugins. This limitation can be quite restrictive for many users.
WordPress.com can also be quite expensive compared to other hosting providers. Their prices start at $29/month, which can be quite high.
We always recommend WordPress.com users to move away as quickly as possible to avoid being locked in and paying too much for your website.
If you’d like assistance with migrating your website from WordPress.com to another hosting provider, such as one.com, we’re here to help. We can often secure a free domain and one year of free hosting for our customers.
Please reach out to us at [email protected] if you’d like to proceed with that solution.