There’s this userscript [Userscript]: Anime Context Sentences which takes information from this website https://www.immersionkit.com/
jpdb.io also allows you to search specific words through their database and get a list of anime/manga/novels that contain that word. I’ve usually searched through that list of media for something that seems familiar to me and then tried to find the use of that word in context. Unfortunately jpdb doesn’t make this easy for you since for multi-episode series, the site won’t let you search for which episode the word was used in so you have to check each episode’s list individually.
Though for actual memorization, the best effects will come from finding the word completely organically while you’re reading. Which is just dumb luck I guess but the Baader–Meinhof phenomenon will strike you much more than you’d expect if you read as much as you can