@ViolaB If you enable it, people will be able to find your posts when they do a search (without needing to use hashtags). For example if you opt in and someone searched for "magic" on Mastodon, your post would show up.

Note that public posts can still be searched with a normal search engine even with the setting off.

Pixelfed ( https://pixelfed.org ) is an Insta replacement if you haven't seen that yet. A Stories feature is being developed, but it might not have a music library like TikTok.