Basis of Presentation (Details) - Schedule of derivatives using the Black-Scholes option pricing model	3 Months Ended	12 Months Ended
	Oct. 31, 2021	Jul. 31, 2021
Basis of Presentation (Details) - Schedule of derivatives using the Black-Scholes option pricing model [Line Items]
Expected dividend yield	0.00%	0.00%
Minimum [Member]
Basis of Presentation (Details) - Schedule of derivatives using the Black-Scholes option pricing model [Line Items]
Expected stock price volatility	81.43%	125.60%
Risk-free interest rate	0.05%	0.05%
Expected term	2 months 15 days	10 days
Maximum [Member]
Basis of Presentation (Details) - Schedule of derivatives using the Black-Scholes option pricing model [Line Items]
Expected stock price volatility	239.82%	283.01%
Risk-free interest rate	1.55%	1.65%
Expected term	9 years 18 days	10 years