Accidental?

He spoke out against it publicly and even threatened to veto should it make it through Congress.

It was him speaking out against it (and the abuses of it by intelligence agencies) that discouraged both Democrats and Republicans from pushing it through.

Trump didn't like the IAs and they didn't like him.

From Wiki - “On March 10, 2020, Jerry Nadler (D) proposed a bill to reauthorize the Patriot Act, and it was then approved by the majority of US House of Representatives after 152 Democrats joined the GOP in supporting the extension. The surveillance powers of the Patriot Act needed renewal by March 15, 2020, and after it expired, the U.S. Senate approved an amended version of the bill. After President Donald Trump threatened to veto the bill, the House of Representatives issued an indefinite postponement of the vote to pass the Senate version of the bill; as of December 2020, the Patriot Act remains expired.”