I am looking for an immersive and good quality
Since people hear sounds differently, picking speakers (and all other similar peripherals, including but not limited to: headset, KB, mice etc), is personal choice. So, what can be great for me, may not align nor even match your taste.
Something to keep in mind.
Could you also provide model suggestions and links please?
You said that you already did some research. But you didn't specify which sites you looked at. So, here's one such roundup (that you maybe already visited),
link:
https://www.techradar.com/news/best-computer-speakers
2.0 or 2.1 speaker system
2.0 speakers are more compact and good if you don't have much desk space and/or doesn't have room to house the subwoofer.
2.1 speakers come with subwoofer and provide additional "oomph" (bass).
I'm one of those who value deep, rich bass the most.
So, i currently have 2.1 speaker system (AverMedia Ballista Trinity GS315), that has it's own dedicated AMP.
I used to have 5.1 speaker setup (also with dedicated AMP, built into subwoofer + remote) but the extra two rear speakers didn't suit my needs, so, packed them up and got myself 2.1 speaker system instead.
Way back in time (some 20 years ago or so), i used to have 2.0 speaker system (several actually). Better than nothing, but not enjoyable.
Nowadays, i listen most of my music via headset (Corsair Void Pro RGB USB with Dolby 7.1 surround sound) since i don't live alone anymore. Living alone has the merit of turning up the volume (bass) with little, if any care in the world.
But living with someone else, i need to be mindful of others. But i do turn up the volume when i drive alone in the car.
In any event, i suggest that you watch video reviews of possible speakers you are eyeing, so that you can get an idea on how they sound. Of course, if your playback device is poor, then even the best review can't provide the full experience of any given speaker to you.