@BobDerksen, you are going to encounter several problems. Your old version of Manager is literally thousands of updates behind. The database structure has changed. So any business data files created with it will not open with current versions. (The conversion script was removed in 2020.) So you are going to have to update in two stages. See Business database not valid, desktop version on Windows 10 - #2 by lubos.
But that does not explain any failure of the application to open at all, if indeed that is what happened to you. We need much more information to help. For example, when you say, “…I updated my MacBook,” do you mean you updated software on your MacBook, or did you get a new MacBook? Whatever you mean, did you take any steps to move your business data files? In other words, tell us the entire scenario.