Thumbnails on tweeter and facebook and youtube

https://developer.twitter.com/en/docs/tweets/optimize-with-cards/guides/getting-started https://www.youtube.com/watch?v=D2jBw3aZkQ8 https://developer.twitter.com/en/docs/tweets/optimize-with-cards/guides/getting-started https://www.youtube.com/watch?v=XjczD5aTaHs https://www.youtube.com/watch?v=BUBomg6_G0w https://www.youtube.com/watch?v=lYqDPyZPTnk https://www.youtube.com/watch?v=TseaaolcV1Q https://honeypotmarketing.com/facebook-thumbnail-fix/ https://www.techprevue.com/facebook-open-graph-meta-tags-for-blogger-advanced-practices/