The first video is Ron Paul on Alex Jones Show. Jones has switched to being pro-Trump. Paul has never been and never will be pro-Trump. This video is from October.
In April Ron Paul talked about how the Republican Establishment changed the convention rules to silence him, and how this helped Trump in 2016.
In another interview Paul says that Trump is the same as Hillary, hence he will not vote for either:
Ron Paul has also said he will not vote for Ted Cruz. He says Cruz is owned by Goldman Sachs but provides no evidence of that. There are politicians owned by companies and people. Al Gore Sr. was called the Senator from Occidental, because he was in the pocket of that company. Harry Truman was called the “Senator from Pendergast” as he was owned by Tom Pendergast, the organized crime boss of Kansas City. Truman never denied it and had Pendergast’s portrait on his Senate office wall. Just because someone’s wife worked in the past for a company, does not mean the company owns him.