indentation

[ptlo]

Hello,

with never version of emacs (I have GNU Emacs 25.3.1 (x86_64-suse-linux-gnu, 
GTK+ Version 3.22.30)) I'm constantly annoyed by too aggressive automatic 
indentation when editing. Basically when I press enter, the cursor on the new 
line is automatically moved to the column of first character of the preceding 
line. This is in the Fundamental mode.

It gets even worse e.g. in the F90 mode. It e.g. moves a comment (starting with 
!) on preceding line to the column of first character of the next (really!) 
line when I add new line inside a code. This is crazy, why I couldn't have 
comment starting at column 1? The emacs simply can't know what I'm going to do 
on new empty line!!

In older emacs versions, when I presses enter, the cursor simply stayed at 
column 1 on new line. If I wanted a formatting, I pressed tab key. Please, 
please, how to return to this older setting? I went through all customizations 
containing indent, but nothing works.

Thank you!

Petr