Aww, I'm sorry to hear that. Please don't feel bad about it - I work in HR so have done lots of recruiting/interviewing and (a) it always feels worse to you than it does to the interviewer so you may not have done as badly as you think and (b) all sorts of behind the scenes weirdness goes on that you have no idea of as the interviewee, it's possible for instance they already have someone in mind for the job and designed the questions accordingly (hate when people do this but it does happen!) or they may have written the job description and advert really badly (possibly copying and pasting from a different job) so their questions were totally different to what you would have reasonably expected or prepared for, neither your fault at all but it still feels horrible 
.
To cheer you up, here's some anecdotes from my own chequered career as an interviewee... job 1 was for a v posh global company, arrived at their swanky offices and was shown to what can only be described as a cupboard with a landline phone - receptionist explained the panel were all at one of the American offices that day so the interview would be 'remote' - this was well before Zoom/Teams were a thing so this involved me shouting my answers down the very-poor quality line to where the panel were huddled around a speaker-phone somewhere in the mid-West... Their questions were also really odd, I work in the operational side of HR (recruiting, employee relations etc) which is what their JD/advert said they wanted, but the questions were all about the other side of the profession, learning and development, OD etc which at that stage I'd had next to no experience in (as was very clear from my CV). I stammered out some nonsense in response (literally not even understanding the question in some cases) and exited the cupboard red-faced asap. They later called with the feedback I'd done a wonderful interview and they would absolutely have hired me 
but another candidate had more experience - I can only conclude they either couldn't hear my answers at all or knew nothing about HR - or possibly both 
!
Another humiliating experience, at the other end of the poshness spectrum, v. cash poor public sector org. that couldn't even stretch to a waiting room/receptionist to look after candidates so I had to wait in the corridor outside the interview room sat on a hard plastic school-type chair while the previous candidate finished their interview. It was clearly going wonderfully, they were all in gales of laughter the entire time and as she left the room they all shook her hand and the panel chair showed her out grinning and saying how wonderful to have met her - during my interview they all sat stony-faced throughout, I failed to even raise a titter or smirk with my (I think, excellent) small talk and little jokes and the panel chair didn't even shake my hand after, just pointed at the door. Unsurprisingly didn't get that job either!
I could tell you lots more bizarre stories from my HR experiences, from the lady who's interviewer technique was to solely ask 'yes/no' questions, no open ones whatsoever (on the grounds it was 'easier for the candidates that way' ), same lady would also usually simply hire the candidate who lived nearest to the office for the role as her main selection criteria (well I guess she could hardly use their interview 'answers'!), to the man who always called candidates in for a second interview and asked them the exact same set of questions as the first interview, in the same order (to check for consistency!) and wouldn't hire them if their answers deviated in the slightest from what they'd said the first time, to various amusing mix-ups (interviewing candidates for the wrong jobs etc) but basically it all goes to show it's a weird old world and a bit of a lottery, I'd chalk this one up to experience/lucky escape and press on! Good luck!