I don't do shortcut. Every year people are looking for one hidden hack and facebook just Keep changes things every now and then. What is still working for me is posting content that people actually reply to instead of scrolling past. Comments seem to carry more weight now than ordinary likes these days. You could also join active groups too, but don't spam your link everywhere so you don't get banned. I even noticed that short videos with normal phone quality sometimes beat the polished edits.