I use Linux Mint and [...] you drag an icon to the desktop and instead of staying where you put it it moves a few spaces to the right and down.
Nemo defaults to auto-arranging icons. To control how the Desktop icons are arranged:
Right-click on the desktop, to open the desktop context menu
In the
Desktop submenu, untick
Auto-arrange Optionally, in the same submenu, untick
Align to grid, to keep icons exactly where you want.
In Nemo (file explorer), folder icon arrangement options are slightly different.
In the
View menu, there is an
Arrange icons submenu.
That same submenu is available in the folder context menu, when you right-click on the folder background.
You can place icons
Manually, or
By name etc.
The default layout is quite sparse. You can choose
Compact layout instead.
This is exactly the kind of difference between desktop environments (not just Windows/Mac/Linux, but KDE/Gnome/XFCE etc.), that throws users off.
However, in all Linux desktop environments, there is a sort of a context menu where these options are managed. You just need to be aware of its existence.
The entire approach to UX is fundamentally different, you see. In FOSS DEs, the underlying idea tends to be
"if you don't like it, change (configure) it to be more to your liking", instead of
"this is how it is, take it or leave it". (GNOME is a weirdo, because its developers are going down the we-know-better-than-users path, and are
removing configuration options. Which is why I don't like it much.)
This kind of mind-twists abound, and make it difficult to move to Linux, unless your mind is willing and able to do the shifts.
Which is also why I believe Linux is easier for complete newbies than it is for those with lots of Windows experience (unless they are proficient with other OSes as well, as then their minds are more aware of those shifts I mentioned).
There is nothing Linux-specific in that, by the way. I first saw this phenomenon in 1999, when I created and taught an introductory IT workshop/course; basic stuff like email, web browsing and search engines, fundamentals of word processing, spreadsheets, and scanning and photo editing. The machines happened to be Mac OS 7.5.3's, with all material as web pages, and attendance optional. The exam was a set of practical tasks, graded pass/fail only.
Users with Windows experience, and especially users who had learned Word on their own, had the most difficulty. (Well, scratch that; the ones with the biggest difficulties was a small fraction who insisted on being shown where to click, as they
did not want to think about all this computer stuff, and because that workshop/course existed to ensure the students had the necessary skills to participate in the studies, you couldn't learn that stuff by rote and pass.)
The single biggest technical hurdle was undestanding the purpose of
styles in word processing, and how they are used to produce indexes and tables automatically. Some had learned to use Word in a way that they managed everything by hand, from fonts to hand-editing page numbers on the bottom of the pages. Unless they learned how to use the styles for formatting, they failed, because the test required the construction of a structured text of a few dozen pages, with "lorem ipsum" content; they just didn't have time enough to create a document of that size in the time allotted. (Using styles as the web pages explained, you could do it in fifteen minutes or so.)
I had observed both students and teachers at that time, and knew that to be the case; which is why I approached the word processing part from a "this saves you oodles of effort and time" viewpoint. Funny thing is, I don't remember anyone failing the word processing part twice in the year I did that.
(Also, although the material included screenshots and the machines had Microsoft Office, it explicitly explained that all word processing programs have a similar logic. By design, it was called "fundamentals of word processing", instead of something like Basics of Microsoft Word.)
I hope this unnecessary background anecdote shows that my advice originates from the wish of people using their tools efficiently and without undue pain or effort; there is nothing ideological in it.