P.S. I know many people who have done this. In the mining industry, the company moves your stuff and usually pays for about 3 months of accommodation so you have time to find your bearings.

The company will bring you over on a long stay work visa which allows you to apply for permanent residence.

There are then two options, you can go with a company sponsored permanent residence or an independent permanent residence visa.

I personally have done the latter path. When I was on the work visa my company paid my health insurance and moving costs. The process of immigrating to Australia was very easy but a lot of paperwork.

Australia also needs trades people and has a list of jobs with scarce skills. Check the list and see if your occupation is on it.

https://immi.homeaffairs.gov.au/visas/working-in-australia/skill-occupation-list

If your trade is on the list you can easily get a company sponsored visa to Australia. This is a good pathway to Australian permanent residence and citizenship.

Botswana fits your list