Trump is a complete fraud, has never lifted a finger for the conservative movement over any issue.
Reagan had been an FDR Democrat in the 1940s and then saw the light. He became a steadfast conservative - even when it was most unpopular - e.g., Goldwater 1964. And Reagan worked in the trenches for years for conservative causes and candidates.
Trump cannot ever be trusted.
Neither has anyone in the GOP.
Not one of them.
And yet we all vote for them no problem.