Very little progress in the game after months.

Hey y'al !
I started playing chess on May 13 of this year.
Despite having played many games, my skills are still too weak for three to five-minute games.
So, I mostly play 10-minute games.
In these matches, I have only managed to reach a ranking of 434, with a game accuracy of 45%-70%.
Did you also have such a poor start with chess? Second, could you recommend online authors who describe openings like the Ruy Lopez and the Vienna Game in an accessible way?
Greetings,
Martin

If you actually want to get better, don't play fast chess. You won't improve if you don't give yourself time to think.

Thank you sincerely for your reply.
You are right; I can barely keep up in five-minute games, even when playing against beginner opponents.
Honestly, I haven't learned any developed tactics yet because I've been making thoughtful moves.
Ten minutes versus five minutes is a huge difference for someone who first touched chess less than two months ago.
My biggest success so far was achieving a stalemate after 104 moves against an opponent with a ranking of 854.
He had an extra queen, yet I wasn't cornered.
Now, I will start learning theory!

Yes, do NOT play fast games. Even 10 minutes is fast, play 15|10. Always check before you move: "Is any of my pieces hanging?" "Is there mate in 1"? Do tactics puzzles, but not here, because here you have to pay for it, do puzzles on Lichess. You should primarly focus on avoiding blunders and tactics.

Out of curiosity, I played with the 800 "Neeko" bot.

quietly, I won without a problem.
Had I played a five-minute game, I probably would have had a problem with a 450 ranked bot.
I received materials on theory in PDF files via private message, so I will learn the basic openings to begin with.
Regards,
Martin

Dont worry, I had very little progress in the game after years

I was so bad that i would create multiple accounts because when you first join the game you gain more elo after each win, but i always lost and returned to 400-800

1) Yeah, definitely don’t play blitz. I’d only use it to test out new openings, which isn’t applicable for your level.
2) Play humans, not computer bots.
3) At the 400 level, it’s all about blunder checks (see if your opponent blundered as well). You’ve been playing for only a month and a half, and there’s no substitute for experience. A loss is never a loss if you learn from it.

My first OTB tournament I played in, I lost all my games. Took me another few years to move past 1000 USCF. I was never a prodigy of any sort, and I identify a lot more with the adult improvers on this site. If you’re having fun with the game, that’s all that matters.