:paraphrased: keep it relevant.
SEBots are very AI, irrelevant postings and links reduce SER
Bought links from link exchanges, have negative value
directory sites: zero, so 90s
Links you post yourself, in blog comments etc, have almost zero value the bot knows who posted it.
BUT
If you make a: blog post/comment/article/infographic; that is re-posted or quoted, that single requote is better for SER than 100 submissions by you,
Make the most accurate;relevant;succinct answers you can,
white-hat SER takes time;
grey & black hat SER is faster but blacklisting is permanent