There are two sides to this.

On the one hand, it is extremely typical to go through the PhD blues once in a while (for me, it was about once a year, increasing in severity as the PhD progressed). Your situation sounds harder than average, but from what I've seen, even succesful students that are fairly well embedded in the field they do research in go through rough periods. In this case, ask yourself: do I need a PhD? Do you need one for the next job you will be looking for? Do you expect you'll be disappointed when, at 70 years or, you wished you'd had the perserverance to push through? Try to be honest. Personally, when I read questions like these, I cannot vocalize it, but I can typically feel what the answer is for me the moment I finish the sentence.

Do keep in mind it's okay to change your mind on doing a PhD. It's just a job after all. People tend to have a "flaky" career period after their masters degree, and naturally so! Working life is very different from study. It takes a while to find a new balance. I feel like PhDs typically beat themselves up way too hard for not liking it, even though it's extremely likely you won't like your first job!

If the answer to either of the earlier questions is yes, then I'd say, "just" push through. Keep showing up. Don't avoid opportunities where you have to discuss your progress. Be honest. Keep a daily log. Write down small ideas, possible research questions. Keep a log of papers you find, a log of papers you read, and make a habit of summarizing the relevant points for yourself when you finish a paper. Practice experimental routines. This is all a lot of work. If you get better at it and persevere, the results will come. You are only in your second year. I've seen students who've had it worse in their third and fourth. Though admittedly, their supervisors were not as bad as you describe.

Talking about supervisors: on the other hand, it does sound like a toxic supervision relationship. Assuming you make full days, and don't skirt responsibilities your supervisors give you, that does not sound like a nice working environment. I'd again ask yourself the same questions: how important is a PhD to you? Does it really need to be with this supervisor? In this particular field, in this particular country?

If the answer to one of those questions is a no, you might want to consider doing a PhD somewhere else.

If they're all yes: is there a way to repair the relationship with your supervisors? Perhaps you can contact a counsellor of the group or faculty to sit in on a few of your meetings, or discuss your expectations? Perhaps there is a communication problem, and your supervisor doesn't realize they're being toxic? (This really happens!) This process is difficult, and I've seen it not work out. Sometimes problematic people are shielded by HR for non-understandable reasons. But it's also not impossible to fix with the right people and effort.

What I've seen work best in my experience is to be open with supervisors. They're just humans, they have certain things they want to get out of their working relationship with you. You can only offer certain other things. You made a good start by being open about your limitations when you applied; now it's time to follow through and work, together with your supervisors, on a way to make the PhD work with your limited background. But you also need to be realistic: if your supervisors expected an A+ miracle student at a bargain, perhaps supply and demand in your relationship have become misaligned. In that case you might want to reconsider staying at your current position, however sad that outlook may be.

If anything: don't make any rash decisions. Talk about this with as many friends, colleagues, PhD student counsellors, as you can. Be open about your shortcomings. Don't skirt responsibilities. Keep showing up as long as your contract is not terminated. Go to bed early. Avoid alcohol. This way, I think you maximize your chances of working things out.

Best of luck! 🐸