I'm in a similar situation to you, OP. I failed my final year, although I'm still waiting to hear back from the university about my appeal.
Your options for continuing medicine are a bit limited but not hopeless. You won't be able to apply to any of the UK medical schools; none of them accept students who withdrew from another medical course. There are medical schools in Europe, particularly Poland, Bulgaria, Romania, and the Czech Republic which will accept students who have withdrawn from a course. However, you'd have to learn the language before you can start the clinical years and I don't know if you would be able to work in Malaysia after graduating (assuming you wanted to go back to Malaysia). If you want to work in the UK, the GMC does recognize the degrees from these universities. The problem is that the courses generally include an intern year, meaning you would have to apply for full registration rather than provisional. This means you'd be ineligible to apply for F1 jobs through FPAS, but rather have to apply for a Locum Appointment for Training (F2) post before you would be able to start specialty training, and there are very few of these posts available. I think the count for last year was only 230, so as you can imagine there are far more applicants than places. You would be able to apply for Locum Appointment for Service posts and do those for a year or two to build up your resume, and there are plenty of those available. I'm not sure what your nationality/visa status is, and that could make things much more complicated. Also, the rules are probably going to change within the next few years now that Brexit happened.
I haven't looked at medical schools in Asia, but I imagine some of them might be recognized in Malaysia.
You could also consider speaking with a lawyer/advisor about submitting an appeal to the Office of the Independent Adjudicator. They're an external body which reviews academic appeals and might be able to overturn the university's decision. I suspect that the chances are fairly slim of it being successful, but considering how much time, money, and effort you've already spent at medical school it would probably be worth paying a lawyer £150 to see if they can find any procedural irregularities you had overlooked.
I know this isn't what you want to hear, and I'm very sorry, but you might have to consider what options you have if you decide medicine is no longer an option. Have you spoken with anyone at your university about transferring to another degree program? You should have 2 years worth of credits and could easily put them to use studying public health, biomedical sciences, etc. You could consider doing nursing, although the majority of universities in the UK don't accept international students for nursing. A few of the ones that do are still offering places through clearing at the moment (go to clearing.telegraph.co.uk and search "nursing" and "adult nursing").
I'm wishing you all the best. I know things must seem pretty bleak right now, but you'll pull through this.