You're also extremely ill informed about American politics but you're probably just parroting whatever you hear from the adults around you so it's not really your fault.
Biden is not the worst president ever and he's not even the worst president in your lifetime. The one before him very nearly caused a constitutional crisis simply because he could not accept that he lost. Anybody who told him that he lost fair and square he either ignored or fired:
According to the search results, several people in Trump's administration admitted that he lost the 2020 presidential election to Joe Biden:
- Vice President Mike Pence told Trump he "had seen no evidence" of fraud that would change the election result
- Senior Justice Department leaders told Trump multiple times there was no evidence to support his claims of election fraud
- The Director of National Intelligence told Trump the intelligence community did not find any evidence of foreign interference that "would change the outcome of the election"
- The Department of Homeland Security issued a public statement that "there was no evidence any voting system had been comprised" and "the 2020 election was the most secure in American history"
- Senior White House attorneys told Trump there was "no evidence" of election fraud
- Senior Trump campaign staff told Trump the day before the election that he only had a 5-10% chance of winning re-election, and only if he won ongoing vote counts and litigation in Arizona, Georgia, and Wisconsin, which he lost
- Many state legislators and officials who supported Trump's re-election repeatedly told him that his election fraud claims were "false"
- State and federal courts assessed all of Trump's lawsuits alleging election fraud and ruled "his allegations were meritless"
Additionally, former White House aides Alyssa Farah and Cassidy Hutchinson testified to the January 6 committee that Trump privately acknowledged he had lost the 2020 election, despite his public efforts to challenge the results. And this is only one aspect of his Presidency. Yet for some reason people choose to still believe in Trump despite the fact that nearly everything he says is either false or exaggerated. If you dare, read the entire endictment.
It means you don't understand what the first amendment is about.
"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances."
So guess what -- it is only about Congress (the government) restricting speech rights. That's why a private forum like this can freely delete your speech if they like. Of course there are also anti-discrimination laws so a restaurant probably couldn't legally refuse service to a person because they have a Biden shirt or MAGA hat on. So it's not always clearcut.