Angular app performance optimization

I need help with performance optimization of my Angular 2 app. THIS JOB MUST BE COMPLETED VIA TEAMVIEWER. I CANNOT PROVIDE SOURCE CODE SO PLEASE BID ONLY IF YOU CAN DO THIS ON TEAMVIEWER Present performance score on Lighthouse Performance: 5 PWA: 27 Accessibility: 87 UX: 85 SEO: 80 Performance issues: First paint is > 12s Missing Service worker and Manifest Loads all functions in Underscore and Moment library. Need to load only those being used Using Angular builder