Best budget-friendly, durable MacBook for university

All current Macs are equally durable.

gb can refer to storage or ram, which one are you referring to?

Hard to say what you may need since we have no idea what you will be doing with it, but rule of thumb is go with as much of both as budget allows.

Unless you will doing heavy stuff like 4K video editing or 3D rendering, a MacBook Air should be fine.

You may want to consult with your professors what they recommend and what applications your course studies will need. You cannot run Windows on a Mac, so if the courser requires a specific Windows app, you won't be able to run it.

Not sure what "zoll" or "ofc" mean. Pleased write in complete words and sentences, this is not a social network, its a Tech support forum.

What is "not too expensive" for you?

You can compare them here: Mac - Compare Models - Apple

In addition to the link Phil1024 provided, you might also want to look at this one:

Mac - Which Mac is best for me? - Apple

Also, if money is a concerned, consider buying an Apple Refurb. They come with exactly the same warranty as new, look like new, act like new and can be about $200 cheaper. I've bought a couple of Macs that way and been extremely pleased. You may have to keep an eye on the site to see when what you want shows up.

Certified Refurbished Products - Apple

You might also want to talk to people at your university, both faculty and students and see what they recommend.

Get AppleCare+ if you can. Unless you drop it, spill beer in it or it gets stolen, a Mac should easily last you four years.

And yes, please use full sentences and actual words. Not only is not this a social network, there are people from all of the world with different linguistic and cultural backgrounds. The harder you make it for people to understand your post, the less likely you are to get good answers.