Spotify’s terms of service prohibit users from engaging in promotional activities that are designed to mislead or deceive others, including self-promotion. However, it is unlikely that Spotify would delete your account simply for promoting yourself, especially if you are doing so in a tasteful and appropriate way.
That being said, if your self-promotion violates Spotify’s terms of service, such as by using fake or misleading information, spamming other users, or engaging in any other form of abusive behavior, Spotify may take action against your account, including deleting it.
Therefore, it is always a good idea to familiarize yourself with Spotify’s terms of service and community guidelines before engaging in any self-promotion on the platform, and to ensure that your promotional activities are in compliance with these policies.