I haven't yet found any protein powder that tastes good on its own. I started muscle building when I wasn't a vegan, so I have tried non-vegan protein powders too and they're not very good either. The one thing Ive found that I don't have a problem with is amino acid supplements. I got the capsules from https://www.vitaminexpress.org/uk/amino-acids-supplements, and I havent gotten protein powders since. These are capsules that dont taste like much so I dont have any issues with how they taste. Plus they're vegan too, so I think that they'd be a good fit for you.