All over the place, with poor feedback and multiple rounds and over kill. Then nothing for months. Red flags should have made me see how bad inside the company would be

Had a preliminary call with HR, then a 1-2-1 with the hiring manager. The preliminary call with HR seemed to go really well (all the usual questions about your skills and experience). The next stage was weird - it felt like the hiring manager didn't actually want to interview me, and felt I was not the right fit for the role even before we started (so it felt like all the questions were about the skills and experience I didn't have on my CV, and it felt like he was trying to demonstrate how unsuitable he thought I was, rather than find out if I was suitable or not). I was left wondering why he actually agreed to put me forward to this stage when he clearly didn't think I was suitable (and I admit, based upon the questions he was asking, that I probably wasn't particularly suitable - it was like the job he was recruiting for, and the job on the JD that HR was recruiting for, were different roles). Afterwards, I never heard another word from the company (yep, ghosted me) and was left feeling disheartened by the whole process.