To clarify, fluctuation in your subscribers count is normal. We regularly remove spam subs or it's probably viewers unsubscribing & subscribing to your channel normally: https://yt.be/help/qF2u
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
To clarify, fluctuation in your subscribers count is normal. We regularly remove spam subs or it's probably viewers unsubscribing & subscribing to your channel normally: https://yt.be/help/qF2u