Xubuntu 22.04执行sudo apt update命令失败问题求助

嗨，各位Linux社区的朋友们，

我刚接触Linux不久，最近在使用Xubuntu 22.04时，执行sudo apt update命令遇到了报错，折腾了半天也没搞定，想请大家帮忙看看怎么解决。

具体的错误信息如下：

N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://brave-browser-apt-release.s3.brave.com stable InRelease' doesn't support architecture 'i386'

E: The repository 'https://ppa.launchpadcontent.net/nilarimogard/webupd8/ubuntu jammy Release' does not have a Release file.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

麻烦各位大佬给点建议，非常感谢大家的帮助！

备注：内容来源于stack exchange，提问作者Cranberry