I hope you are here because you know generally what a "filter bubble" is, and you want to do more than just being aware of the problem. You should want to pop your own personal filter bubbles. This page can get you started. It is intended as a no-nonsense guide to core concepts and foundational practices to get out — and to get somwhere better.
You might not always have the time, knowledge, or energy to engage critically with the algorithmically-run feeds in your life. In these times, turn them off. Don't use the feed when you are uncritical. Put the phone down. Close the laptop. Touch grass, or sit and stare at a wall. Commit to it. Don't use the device. Don't put it in charge. Do not touch it, if you are not prepared to be in charge.
"Turn it off" works at many levels; it covers a lot of what it means to be in charge of your device. Don't allow it to do more than you are wanting it to do:
Everyone has to "turn it off" sometimes. You may not (yet) have the complete set of academic or technical skills to get online outside your bubble. Your available time and energy may be too small. In the end, "turn it off" is the common resting place for responsible geeks and responsible laypeople alike. It can always be turned off.
It can always be turned off - but you don't always control the power switch. Your spouse, neighbors, coworkers, etc. are all themselves the targets of extensive invisibly-custom-crafted auto-propaganada machines which spin narratives designed above all to keep them coming back to the feeds that sell them those narratives. You can't turn people off for being filter-bubble-unsavvy, but you can learn to mistrust their claims and opinions. Don't trust them.
Read.
Read
books.
Find out
which
books to read from
sources
that
aren't
algorithmicallydriven.
Computerized analysis tools can genuinely help with finding what to read, but don't hand control of your bookshelf to inscrutable systems that work by tracking ideological appeal or genre similarity - or that can't give a recommendation with any more nuance than "you might like..."