No it was not. Biden won the 2020 election by more than 7,000,000 votes, an amount somewhat comparable to the population of New York City. Unlike 2000 or even 2016, This was not a close election, or one that Trump could've easily disputed (which is why he got angry about it). No fraud occurred, and none could've added up to a Trump loss. Biden decisively won the Presidency by both the electoral vote (which decides the Presidency) and popular vote, fair and square.
What you said, is blatant misinformation.
More exaggerations, people like James Buchanan generally hold the title of worst President.
In terms of approval rating, several Presidents have had lower approval ratings than Biden at some point (including both Bush's, Reagan, and Clinton)
In any case, it's too early to judge where exactly his performance stands relative to other Presidents as a whole, especially in divided modern politics. Most historians hold off on ranking Presidents (or roasting them-in your case) until they leave office.