Question about Ratelimits

[Tomato6966]

Since i often get Ratelimits i asked in d.js DC Server and in discord developers but nobody could give me clear answers!

So I am fetching many datas
Like audit log, guild owners, members, channels etc.

Why am i getting 429?

I always do:

let members = await guild.members.fetch().catch(console.log);

In the past i used to do: (FOREXAMPLE)

guild.fetchAuditLogs({
  limit: 1,
  type: "CHANNEL_CREATE",
}).then((audit => {
  return audit.entries.first()
})).catch((e) => {
  return console.log("Missing Permissions");
})

Someone told me i need to check permissions first-
Do i really do?
If so is it for everything like that?