Question for pre-seed/seed founders actively fundraising - I will not promote

What are the biggest problems you are facing right now? I was a founder before and an angel investor now, and I'm trying to validate an idea I had. I know I struggled with certain things at this stage, but if I mentioned them here, I might bias your answers, which would defeat the purpose of me genuinely asking you. I would sincerely appreciate your participation! Thanks in advance! - I will not promote