How can I learn Chess?

I know the basic moves of all chess pieces and have played a few games when I was a kid.

But I never learnt the “strategy” part of the game—how to think ahead, anticipate some moves, alternatives, etc.

I rate myself “zero” in this ability to play with a strategy.

What’s a good way to approach this?

What if I dont have a partner to play with—any recommended PC games that can be a good opponent to practice?

Thanks,