Absolutely! Of course, most of them aren't completed. Almost all of the best ones are still ongoing. The only completed one that I personally loved was The Reason Raeliana Ended Up At the Duke's Mansion. But here's all my favorite ongoing ones - the best one is definitely Suddenly Became A Princess One Day, then The Villainess Lives Twice, Seduce the Villains Father, & Beware of the Villainess! Now, here's a few that I personally didn't vibe with for various reasons, but are actually very popular with other people so you may enjoy them. The Abandoned Empress (complete), Doctor Elise (complete), As You Wish Princess (complete), I Became the Ugly Lady, The Black Haired Princess, & Empress of Another World.
Oh, and this isn't an isekai recommendation, but it's my current number 2 favorite manwha and it's fantasy romance so you might still like it! It's called Under the Oak Tree.
I gave it my best shot. There are so few completed stories in the "fall into another world" or "reincarnation" tropes that when I saw a completed story with good reviews, I jumped on it. How this got those good reviews is just beyond me. This story reads like the cheesiest Wattpad novel I could imagine. Every line and interaction is cringe worthy, the MC is an absolute child, the love interest is grossly immature as well, the "villainess" is just as bad. It's impossible to take anything seriously due to the atrocious dialouge and lack of depth. There are other more developed stories in this trope with mature characters and storyline to spend your time on. This one just ain't it.