I've seen people in videos clean ovens using scrub daddy cif cream cleaner (the tall bottle she pulled out) and a scrub daddy sponge I'm assuming with cold water so it's firm. Hope it works for you!
@AKStrych well I will give it a go. My oven is pretty bad xx long story.... My computer died in the office. I was trying to do booktube and had to basically dismantle the old computer and go out purchase a new one. Then, I had to deep clean the office to put the new computer in. I was so fed up that I decided to clean the cooker big mistake lol and now I need a really good cleaner on it, lol 😆