Start an auditing or consulting career

Answer:
First, you must know and formalize your knowledge of ISO 9001:2015.
Second, you must know good auditing practices.
Third, you must have experience doing internal audits.
Fourth, you must have training to be a lead auditor.
Fifth, you should contact a certification body and ask how you can apply to become a Lead Auditor.

2.What suits me better taking the path of consulting or being an auditor?

Answer:
Either path that you take does not invalidate the other. I believe it even enhances the ability of an auditor to have the experience of a consultant and vice versa. So, you can start as a consultant and internal auditor and then become also lead auditor for one or more certification bodies.

The following material will provide you more information about starting an audit and a consulting career:
How to get new clients for your ISO 9001 consultancy - https://advisera.com/9001academy/blog/2019/03/05/how-to-get-new-clients-for-your-iso-9001-consultancy/
Free webinar on demand – How to sell ISO consulting services - https://advisera.com/9001academy/webinar/how-to-sell-iso-consulting-services-free-webinar-on-demand/
Enroll for free - ISO 9001:2015 Lead Implementer Course - https://advisera.com/training/iso-9001-lead-implementer-course/
Enroll for free - ISO 9001:2015 Internal Auditor Course – https://advisera.com/training/iso-9001-internal-auditor-course/
Enroll for free - ISO 9001:2015 Internal Auditor Course – https://advisera.com/training/iso-9001-lead-auditor-course/
- book – ISO Internal Audit: A Plain English Guide – https://advisera.com/books/iso-internal-audit-plain-english-guide/