how i can promote cpa offers

hello dear members
I just asking if anyone has a method to promote CPA offers on

facebook
twitter
instagram
youtube
which simple & free method to build a landing page
which best offers can I use

best regards

You can find free landing grabbers on Google search

Check this new thread https://www.blackhatworld.com/seo/ig-cpa-results-with-only-1-account.1038987/
And "IM Journeys" section

It's good to develop a couple of accounts in each of those social networks and start growing them. You can do that by posting often and with timing, according to when people are most active. Try to engage with your followers a lot - by answering comments and asking questions, as that's really important in order to have good activity on your sources.