Early years Lauritsen has both played for
Herning Fremad and Brande IF as a youth player, starting as a four-year-old, before joining
Midtjylland in the summer 2011. He made his senior debut for Midtjylland at age 19 on 8 November 2015 in a 5–1
Superliga home win over
Esbjerg. That appearance proved to be his only first-team outing for Midtjylland, as he sought regular playing time elsewhere. He immediately became a starter in Skive's defence and gained his first experience of senior football. On 1 December 2016, he scored his first senior goal, equalising in Skive's 3–2 victory over
Næstved. Lauritsen totalled 31 league appearances and three goals during his year with Skive, prompting interest from higher-tier clubs. A few months later the club extended Lauritsen's contract for one more year. He quickly became an integral player at Vejle—in the
2017–18 season he scored six goals from
centre-back as Vejle clinched the 1st Division championship, earning promotion to the
Superliga. Lauritsen made his top-flight debut for Vejle the following season and netted his first Superliga goal in a 1–1 draw against fellow promoted side
Vendsyssel in August 2018. His performances as a prolific scoring defender in Denmark attracted attention from abroad.
IFK Norrköping On 11 February 2019, Lauritsen moved abroad and signed for Swedish top club
Norrköping on a three-year deal. He continued his impressive form in
Allsvenskan, tallying 11 goals in 48 league matches over the
2019 and
2020 seasons—an unusually high output for a defender.
Dinamo Zagreb On 2 October 2020, Lauritsen signed for
Croatian champions Dinamo Zagreb. He debuted two days later against
Varaždin and made an error that resulted in a goal. However, his performances soon drastically improved and had an instant impact on Dinamo's defense, causing them not to concede a single goal in all five
Europa League group stage games that he played. During Lauritsen's time with the club, Dinamo won back-to-back Prva HNL titles in
2020–21 and
2021–22, and also captured the
Croatian Cup in
2021. "I am incredibly happy to join... It is a huge club, and I am ... proud to represent Brøndby IF… I have come to Brøndby to play at the top of Danish football and eventually to play in Europe again," Lauritsen said upon signing. Making his debut for the club on 10 April, he entered the match in the 88th minute, substituting for
Frederik Winther during a 2–1 league loss to
Nordsjælland. On 16 April, he earned his first starting position and contributed to the team keeping a clean sheet during a 1–0 victory against
AGF. Lauritsen began the
2023–24 season vying for a regular place in Brøndby's defence, but another injury in August 2023 derailed his progress. During his absence, newly arrived centre-back
Jacob Rasmussen and others cemented their spots, and head coach
Jesper Sørensen kept faith with a back line of Rasmussen,
Henrik Heggheim, and
Frederik Alves, leaving Lauritsen out of the starting eleven. Although he recovered fitness later in the season and went on to make 19 league appearances (scoring his first goal for Brøndby in May 2024 during a league fixture against AGF), he largely had to settle for a reserve role. In October 2023, media in Sweden even reported that his former club
IFK Norrköping had him on their wish list due to his situation, as Norrköping's coach
Glen Riddersholm publicly expressed interest in a reunion. In early 2025, Lauritsen experienced a resurgence in form. Brøndby entered the spring of the 2024–25 Superliga campaign with captain Jacob Rasmussen and Frederik Alves both sidelined by injuries. The following week Lauritsen retained his place for the derby against
Copenhagen, where he again impressed as the central figure in a three-man defence, helping Brøndby to a 2–1 victory at
Parken. Birk highlighted that when the game suits Lauritsen's strengths and "he can stand and head away" opposition attacks, "he is one of the Superliga's best" in that role." ==Personal life==