I can assure you that Mathematica is not garbage.
Unless you already program, it is probably the most complex program you might ever use. (If you do program, I am sure that you realize that each language has its own syntax, and you can't assume that syntax that work, say in c, (ending lines with semicolon, for example) would work in Wolfram Language.)
There are tutorials in the documentation for the program, which I suggest that you go through. There are videos on the Wolfram website that cover the basics, and one of them is two minutes long. This one in particular covers the use of the semicolon, and a lot of other things you need to know.
If you are willing to put in the time and effort, you will be rewarded with a powerful and exquisite tool. There are people in this community eager to help.