Betta Fish: Day 4 – did a 50% water change on day 3 since ammonia was at 6. Ammonia has not dropped. Why been going on for two month 😭

On day three my ammonia shot to 6ppm. FISHLESS CYCLE
I did a 50% water change. Treated the water and added api quick start

Did not add any extra ammonia source and I removed all the fish flake I could get.

This is 24 hours after water change and my ammonia is still high. It's still hovering around 6-8ppm.

I'm starting to lose patience and my husband well he just fed up let's say and regret ever setting up a tank. I don't wanna give up yet tho I really really don't wanna but it just never stays below 4 it always shoots to 6-8ppm.

Yes I have a active soil. I wasn't aware of this until someone mentioned it yesterday and I went to the website to re read what I bout.

I haven't tested my tap water yet which I will do later today. Forgot to do it yesterday did water change late at night ( got two little monsta to take care off)

Any other advice that can help or just give up?