Most, yes.Are you assuming he is responsible for all of it?
Had he graciously stepped back like everyone else who ever lost an election and Russia been debunked like it was, and then the laptop been realized to be real in the left-wing media, then the hysteria would not be his fault. He went on a reckless lie fest post-election, and J6 was the result. Nobody else made him press people to vote differently as electors or to find ballots or to stash docs in Mar A Lago. He is the king of unforced errors.