If you click the 3 vertical dots, it should expand to reveal a star-icon option that’ll allow you to save the comment. To view saved comments, click on your username in the upper right, then profile. There should be a ‘Saved’ tab

One other helpful snippet that’ll let you filter out posts that link to wsj, twitter, youtube, etc… lemmy.world##a[href*=“wsj.com”]

I’m no ublock expert, but I’ve mostly tested these filters, so ymmv. If you run into any issues or need to tweak a filter please follow up so we can all share 😀