Not all reviews are created equal.
There are many types of review with different intentions and requiring very different amounts of input.
Think about:
Organisations such as The Cochrane Library or The Joanna Briggs Institute have very detailed specifications on how a systematic review should be done (see Systematic Reviews - Resources tab).
Systematic reviews:
Consider whether you will be able to meet these requirements.
Read the PRISMA 2020 Statement (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) for a checklist of the steps involved in a systematic review.
See the types of review tab for more information.