new line without <br> tag

You can use the <pre> tag to keep the line breaks.

<pre>
lorem ipsum
lorem ipsum
lorem ipsum
</pre>

The default style for pre tags is monospaced font, but that can be overriden.

You can achieve the same effect without any extra default formatting using the white-space: pre CSS property.

<div style="white-space: pre">
lorem ipsum
lorem ipsum
lorem ipsum
</div>

There are several other values for white-space, but you should refer to the documentation to choose the most fitting one.

Note that pre will treat every line break the same including the one following the <pre> or <div> tags. If you don't want them you will need to do:

<div style=...>lorem ipsum
lorem ipsum
...

Html: You may wrap them in block elements like <div></div> or <h1></h1>

Css: You may use white-space: pre-wrap;

Js: You may use "replace" to change "\n" to <br/>

I would like to deliver some additional ways to achieve the OP's purpose. Yet, the direct answer for the title "new line without <br> tag" would be <pre> or white-space: pre-wrap; like the above.

But,

If I need 100000 lines of dummy lorem ipsum <br>, I would rather use emmet (which is built-in in VSCode) than write anything myself. ({lorem ipsum <br>}*100)*100

Or, in case these 100000 short lines are predefined text, I can search and replace (Ctrl + H) with regex turned on, replace the regex $ (endline) with <br>.