The claim is partially accurate but oversimplified. This Reuters factcheck on the matter goes all the way back to the Korean War, and makes this conclusion:
"If we consider the Korean War, the Vietnam War, the Gulf War, the war in Afghanistan and the Iraq War, Trump joins Barack Obama, Bill Clinton, Ronald Reagan, Jimmy Carter, Gerald Ford, Richard Nixon, John F. Kennedy and Dwight D. Eisenhower in not having officially brought the United States into a new war since 1945."
So while Trump indeed did not initiate any new major wars, he shares this distinction with other modern American presidents.
Further, characterizing his presidency as having "low to no involvement in war" is misleading. His administration continued active military operations in multiple theaters, resulting in combat deaths that exceeded some previous administrations in certain periods. According to the Washington Post, "at least 65 active duty troops died in hostile action in Trump's presidency, the records show, as he ramped up commitments in Iraq and Syria to fight the ISIS terrorist group while also launching airstrikes on Syria as punishment for a chemical weapons attack."
Trump also played a role in major military moves, like the killing of Iran's Revolutionary Guards Commander Qasem Soleimani, as reported by the BBC.
The claim conflates "not starting new wars" with "low war involvement," when Trump actually maintained and sometimes escalated existing military commitments. A more accurate statement would be that Trump continued existing conflicts without starting new major wars.
