If you can in any way get to EU borders, you won't be turned back unless there's a very serious reason to do so (not having documents is not).
Your situation where it seems like your state is retaliating for your political opinion is one of the possible reasons to grant international protection. If it's Russia you're talking about, many people like you already went through the process in Czech Republic.
https://www.mvcr.cz/clanek/asylum.aspx
If you need help, contact me at throwawayasylum@email.cz
I considered this https://www.gov.uk/apply-citizenship-stateless https://www.gov.uk/stay-in-uk-stateless
I'd apply for citizenship, but I am unable to. I already have a startup idea that can fund it, if only I could have the necessary resources to get started building it. I couldn't even apply to YC2023 batch, given my situation. I am unable to do anything, because I don't have any IDs, bank account, phone number... not even a home. I need a fresh start, a citizenship in a good country with new name.