You can segment on suppressed subscribers in Rule, this will give you more information about your subscribers and you can see if they have unsubscribed from email campaigns, SMS campaigns, transactional SMS and transactional emails.

Go to the segments you want to segment on suppressed subscribers

Click on "+ New rule"

1. In the first field, choose 'Suppressed', and in the second field 'is equal to'
2. Then choose settings, as you can see there are different options, choose the ones that suit you!
3. Sync