For a long while, Facebook hasn’t been a platform to connect people or to connect people meaningfully. It’s either useless and random stuff while your close ones’ posts don’t appear on your timeline and vice versa, or sensational posts that cause anger, anxiety, worry, and despair.
The “algorithm” tuned itself quite well to induce and increase addiction. It’s focused. It’s intelligent. It’s purposeful. None of those aspects may help you become happier or more satisfied or more connected.
I don’t think the “algorithm” can be corrected or made better either. It’s too big, too influential, too profitable and likely too complex (due to ML). Short of getting rid of it completely and going back to a chronological feed only from people and pages you follow, nothing can be humanly done about this decline.
Find another platform and focus on smaller groups if you need or value connectedness or relevant/useful content.