How do you keep things secure and up to date? That’s always been my problem and when developing an app I don’t want to do system administration so I always end

How do you keep things secure and up to date? That’s always been my problem and when developing an app I don’t want to do system administration so I always end up going with heroku (or it’s cheaper sibling render.com lately) because I don’t have time for system administration, backing up, etc.