I've watched Russian Doll over the last couple of days (it's only eight, 25 minute long, episodes), it is very good and I would recommend it. Very well acted and full of twists and quite funny! Has a satisfying ending while leaving a lot of stuff unexplained and the possbility of further seasons.
Have also been watching Titans on the slower pace. Wasn't really sure of it at first, seemed a bit self consciously dark (they make sure to have the word "fuck" said several times an episode and it can feel forced) but I'm enjoying it a few episodes in. Characters are mostly good with the teenage girl and the alien woman (spoiler?) being the most interesting so far. Some good guest stars too, though it does have a habit of introducing characters then just moving on to new characters the next episode. I liked the "family" of assassins. I'll watch the whole season!