Insurance Adjustor as in?

I know 1 can have 2 licenses to sell GI and 1 Life license

Insurance company don't/won't engage individual to do adjusting job. Its B2B arrangement.
Freelance...subject to adjusting firm. Usually, it is for those experienced retired person for niche expertise i.e marine hull etc.

Good career? Good money? [B]
Just another salaried job. The margin for adjusting firm is thin. Those big firms depends on volume for their operating expenses.

Not all cases require adjusting. The loss amount needs to cross certain threshold before insurance company assign the case to adjuster.
For motor claims, if its panel workshop and within limit, approval is via system.

For after retirement?> Unless you like to write report, kena tendang report, dispute report, face hostile clients...all part of the works. + dead lines.

Marsh is broking firm. Not adjuster in MY.
Big firms i.e Mclarens, Crawford, MSM, Mestari etc.

Usual case don't need to face client. Motor case, rarely.
Complicated cases / huge losses subject to claims dept's discretion aka passing the ball. For instance, factory fire loss which may includes consequential loss claims etc.

From your replies you don't even seem to know what loss adjuster does, and I am going to assume you don't even have the relevant loss adjusting certification and experience.

So no

As for in house (working in insurance company)

Most head of in house adjuster are in their 40es.

They will only consider if you are very tech savvy or expert in EV

Latest BNM guide required motor loss adjuster to have at least following qualifications

A. Associate or Fellow of the Malaysian Insurance Institute
B. Associate or Fellow of the Chartered Insurance Institute
C. Diploma or Advance Diploma in Business Studies, majoring in Insurance from MARA University of Technology
D. Degree in Risk Management

And you need to be attached to BNM certified adjusting firm

https://www.bnm.gov.my/-/registered-adjusters

BNM has also shorten the time of adjuster to complete the report hence a lot of firms are looking for qualified loss adjuster