If you want to open programs on startup of your computer, there is an easy way in MacOS for those programs that do not offer this feature in their own settings.

At the top left, click on Apple and then System Preferences.

MacOS System Preferences
Select Users & Groups.
MacOS settings for "Users and Groups" to add autostart items
The login items are the programs that are executed as soon as the user logs in. By clicking on the plus you can add new items.