Making of series for season 1: https://www.youtube.com/playlist?list=PLbAFXJC0J5GYEkfxnGTWnvgcEypgBeAb5

Haven't watched the show myself but it looks computer generated to my eye, using similar techniques seen in SpiderVerse and the newest Puss and Boots (Here's a making of feature for Puss and Boots. (https://www.dailymotion.com/video/x8l84ea) In essence it's 3d character models, on a digitally painted background with hand drawn effects and using an unusual frame rate to make a unique look. As a small 1 man crew I would recommend at looking at 3d programs and what projects individuals have been able to produce with that. I personally look at what people make with Blender since it is a free program. Keep an eye out for people using similar art styles to Arcane and try to deconstruct how they're making it or ask them about it. Once you dissect the the themes/characters/settings that you like in Arcane, as well as constructing and moving the characters, you will then need to figure out how to distill them into a short film that you and hopefully a small group of like minded individuals can create. Also, side note if you interested in Animating anything yourself it is probably a good idea to find a copy of Richards Williams The Animators Survival Kit. Kind of got off track there XD Hope you find some people that share your love for Arcane so you can all take a deeper dive into it.