With the arrival of AI (aArtificial iIntelligence), some people are worried to loose their job.

Artificial Intelligence should be capital because the abbreviation AI itself is always capitalised

Previously, we predicted that now, we'll be working atfrom home or that robots will work for us and take our jobs.

It is always 'work FROM home" since you are away from the main area for the object to occur. Not ad, and.

The first prediction, during the Covid-19OVID-19 pandemic became true, but the robots weren't takeing our jobs at all.

No need for a comma before during, COVID-19 is an event which should be spelt according to how it is intended to be spelt by organization so it needs some tweaks, and weren't is the auxiliary word for negative past continuous, and in present continuous, the verb has an "-ing" at the end so that should also be the case for the present continuous tenses

I think it's very difficult to predict the future because it's mysterious and we can't know how it will be tomorrow.

"It" should be added because anything can be "it", like the situation, or something else.

An economic expert thinks that AI will take some jobs, but other jobs will crop up.

Comma before "but".

The billionaire Elon Musk thinks in a few years, we won't have to work thanks to AI.

Double l in billionaire, and we say “a few years” when we mean some years—enough to matter. If we say “few years” without “a,” it sounds like not many at all, maybe too little. The word “a” makes the meaning more positive.

I think it's not that good if that really happens because people will be less intelligent, and I think we could be in danger if AI takes the power.

Intelligent with a double l, comma before and, and "AI take" is not correct because the verb form HAS to agree with the noun's plurality, meaning that because AI is a singular concept, the verb changes to takes because take is for plural nouns, so it should be 'AI takes'

Thanks for reading!

With the arrival of AI (artificial intelligence), some people are worried to looseabout losing their job.

Both are correct, this just sounds more natural

Previously, we predicted that now, we'lld be working at home or that robots willould work for us ad take our jobs.

The first prediction, during the Covid-19 became true but the robots haven't taken (or weren't takeing) our job at all.

I think it's very difficult to predict the future because it's mysterious and we can't know how will be tomorrow will be.

I think it's not that good if that really happens because people will be less intelligent and I think we could be in danger if AI take the pows power (or takes over.)