Moving to a smaller instance is usually a good idea. Do keep in mind that content from lemmy.world could still give errors from time to time since it tends to get overloaded.
lemmy.world is one of the biggest instances, so I wouldn't be surprised if the server struggles from time to time. Because of how the fediverse works, switching between local, all and subscribed doesn't make a difference. You still access the non-local content through lemmy.world because it's cached there.
The irony of me opening up this post and initially getting a 502. 😂
I was having this problem constantly with my lemmy.world account. Made a new one on lemmy.ca and it's been nothing but great.
So I'd suggest making a new account on a smaller instance.
Thunder App
An open-source, cross-platform Lemmy client for iOS and Android.
This community is intended to discuss features and feature suggestions for Thunder; as well as friendly, respectful talks about Lemmy in general.
Please use the GitHub repository linked below to submit bug reports, so keeping track of them is easier, and make sure to search first if you already can find an issue for your report.
If there are any developers who would like to contribute, feel free to reach out on GitHub!
General Links
Website: Link
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Nightly Community: Link