I got into other social media sites way too late

So this time around I might try coming in early! I joined pinterest recently and found that my mother had thousands of likes - I am struggling to get 2!! Obviously she has been on there a lot longer than me but based on algorithms, nowadays getting seen on any social media site is an almost impossible task, I have just published a book that I am struggling to get people to see it - the only way around it is to pay big bucks for marketing but even then, unless your ads appease the algorithms they won't get promoted! Anyway - just venting :)