Laravel sitemap generation help?

hey everyone,

i'm a total noob when it comes to SEO stuff, just launched my first real laravel app a few weeks ago. it's got a bunch of user-generated content, so i know dynamic sitemaps are super important for getting everything indexed right.

i was reading the other thread about "Best way to manage dynamic Laravel SEO sitemaps?" and it was really helpful, but i'm still kinda stuck on the practical steps for proper laravel sitemap generation for a beginner.

here's what i'm trying to figure out and what i've bumbled through so far:

• The Challenge: My app has dynamic routes for user profiles, posts, categories, etc. (think like 10k+ URLs already, growing fast). i need a way to automatically include all these in my sitemap.
• What I've Looked At:
  • I saw mentions of the spatie/laravel-sitemap package. It looks really powerful, but honestly, the docs felt a bit overwhelming for someone who's never done this before. i'm not sure how to plug in my dynamic models efficiently.
  • i also tried a super basic approach, just querying all my records from the database in a controller and looping through them to build the XML. that quickly became a memory hog and super slow, especially with more data. i know that's not the way...
• My Main Confusion Points:
  • how do people handle sitemaps with thousands (or millions) of dynamic URLs without crashing their server? pagination? chunking? some other magic?
  • what's the best way to make sure the sitemap updates automatically when new content is added or old content is changed/deleted?
  • once the sitemap is updated, how do you tell google and other search engines about the changes without manually submitting it every time?
  • are there any specific gotchas or common mistakes a noob like me should definitely avoid when setting this up?

i'm really trying to get my head around this so i can implement it correctly from the start. any advice, simple code examples, or links to beginner-friendly tutorials on laravel sitemap generation for dynamic content would be a lifesaver.

help a brother out please...