Disappointing Interview @ Nobroker

Last month I interviewed with NoBroker for a Demand Servicing Head position. The process went like this: 2 rounds of screening with HR/TA - was okay, good conversations. After which they scheduled an interview with the Business Head for the particular team. This interview went well too. After this they sent me an assignment - the longest assignment I've ever worked on as a part of the recruitment process. It asked me to write multiple detailed SOPs for the sales team, build a demand forecast model, and a complete demand generation plan for an oddly specific scenario. They gave me 5 days for it. I worked my a** off, desperate to get the job as I've been unemployed for some time. I did the assignment close to perfection - spoke to so many industry folks in real estate and made realistic assumptions, covering all possibilities. All in all I've not been so confident about my work ever like I was in this case. I submit and they acknowledge. Few days go by, I follow up, only to be given generic delay reasons by HR. Eventually, after more than a week they rejected me. When I requested for feedback on the assignment they completely ghosted me. I don't know why I'm sharing this here, but it's been hard. I've been jobless for > 5 months and every such experience completely shatters my already low self esteem further.