Modify Beamer Bibliography Style

Question

I am pretty newbie to LaTeX and Beamer theme customization.

I am using the Metropolis template (https://github.com/matze/mtheme).

Everything goes fine, but for the Bibliography: my code (identical to the template code) is:

\begin{frame}[allowframebreaks]{References}

   \bibliography{demo}
   \bibliographystyle{abbrv}

\end{frame}

Now, Bibliography looks like this:

https://i.stack.imgur.com/wQRk2.jpg

As you can see, names are all abbreviated, even for "Influx Development Team", and all uppercase letters are lowercased.

How can I fix this?

Changing \bibliographystyle{x} did not work, always same result.

EDIT

As samcarted suggested (ty btw), here is a MWEB:

\documentclass[10pt]{beamer}

\usetheme[progressbar=frametitle]{metropolis}
\usepackage{appendixnumberbeamer}

\usepackage{booktabs}
\usepackage[scale=2]{ccicons}

\usepackage{pgfplots}
\usepgfplotslibrary{dateplot}

\usepackage{fancyvrb}%indent. code

\usepackage{color}%color words

\metroset{block=fill}%globally fill all blocks

\usepackage{xspace}
\newcommand{\themename}{\textbf{\textsc{metropolis}}\xspace}

\title{Funny title}
\subtitle{Funnier subtitle}
\date{\today}
\author{Funny author}
\institute{Not funny institute}
% \titlegraphic{\hfill\includegraphics[height=1.5cm]{logo.pdf}}

\begin{document}

\maketitle

\begin{frame}{Table of contents}
  \setbeamertemplate{section in toc}[sections numbered]
  \tableofcontents[hideallsubsections]
\end{frame}

\section{sec1}

\begin{frame}{frame1}

Citing stuff \cite{citethis}

\end{frame}

\appendix

\begin{frame}[allowframebreaks]{References}

  \bibliography{demo}
  \bibliographystyle{abbrv}

\end{frame}

\end{document}

While my .bib file is:

@article{ citethis,
    author = "LaTeX Newbie",
     title = "As u can see, author name has been abbreviated and AlL tHeSe UppErCaSe LettErs haVe BeeN LowerCaseD",
    year = "2018",
    month = "November",
    url = "https://www.icannotfigurethis.out"
}

Answer 1

To preserve the capitalisation of the title (or parts of it), you can wrap it in {}

The same technique can be used to enter a corporate author name, which does not consist of the usual name parts and thus should not be shorted to initials.

(See https://tex.stackexchange.com/a/386066/36296 and BibTeX loses capitals when creating .bbl file for further information)

@article{ citethis,
    author = "{Influx Development Team}",
     title = "{As u can see, author name has been abbreviated and AlL tHeSe UppErCaSe LettErs haVe BeeN LowerCaseD}",
    year = "2018",
    month = "November",
    url = "https://www.icannotfigurethis.out"
}