If you want a dedicated instance for your bot, you can host Lavalink yourself for free using these platforms:
If you decide to proceed with a free public node, do not use a static link found in a random Reddit thread from two years ago—it is almost certainly dead. Instead, look for dynamic, community-maintained lists. lavalink hosting free link
These are pre-hosted servers maintained by the community. You don't need to host anything yourself; you just plug the connection details into your bot's configuration. If you want a dedicated instance for your