International targeting

[MTBE]

I'm offering an international service to any country from any destination, The website main language is English and i have 4 other languages as subdirectories,

https://beassistance.com

https://beassistance.com/de/

https://beassistance.com/es/

https://beassistance.com/fr/

https://beassistance.com/ru/

I'm looking to target by language not country, Should i choose "unlisted" for all the subdirectories?

my second question regards the meta tags , my current meta tag

rel="alternate" hreflang="ru-ru" href="https://beassistance.com/ru/" />

And i'm thinking about using

rel="alternate" hreflang="ru" href="https://beassistance.com/ru/" />

Is that best practice to target by the language?

Update

I already have Hreflang Sitemap

<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" <br="">xmlns:xhtml="http://www.w3.org/1999/xhtml">
<url><loc>https://beassistance.com</loc>
<xhtml:link<br>rel="alternate"
hreflang="en"
href="https://beassistance.com"
/>
<xhtml:link<br>rel="alternate"
hreflang="de"
href="https://beassistance.com/de/"
/>
<xhtml:link<br>rel="alternate"
hreflang="fr"
href="https://beassistance.com/fr/"
/>
<xhtml:link<br>rel="alternate"
hreflang="es"
href="https://beassistance.com/es/"
/>
<xhtml:link<br>rel="alternate"
hreflang="ru"
href="https://beassistance.com/ru/"
/></xhtml:link<br></xhtml:link<br></xhtml:link<br></xhtml:link<br></xhtml:link<br></url></urlset>

<url><loc>https://beassistance.com/de/</loc>
<xhtml:link<br>rel="alternate"
hreflang="en"
href="https://beassistance.com"
/>
<xhtml:link<br>rel="alternate"
hreflang="de"
href="https://beassistance.com/de/"
/>
<xhtml:link<br>rel="alternate"
hreflang="fr"
href="https://beassistance.com/fr/"
/>
<xhtml:link<br>rel="alternate"
hreflang="es"
href="https://beassistance.com/es/"
/>
<xhtml:link<br>rel="alternate"
hreflang="ru"
href="https://beassistance.com/ru/"
/></xhtml:link<br></xhtml:link<br></xhtml:link<br></xhtml:link<br></xhtml:link<br></url>

<url><loc>https://beassistance.com/fr/</loc>
<xhtml:link<br>rel="alternate"
hreflang="en"
href="https://beassistance.com"
/>
<xhtml:link<br>rel="alternate"
hreflang="de"
href="https://beassistance.com/de/"
/>
<xhtml:link<br>rel="alternate"
hreflang="fr"
href="https://beassistance.com/fr/"
/>
<xhtml:link<br>rel="alternate"
hreflang="es"
href="https://beassistance.com/es/"
/>
<xhtml:link<br>rel="alternate"
hreflang="ru"
href="https://beassistance.com/ru/"
/></xhtml:link<br></xhtml:link<br></xhtml:link<br></xhtml:link<br></xhtml:link<br></url>

<url><loc>https://beassistance.com/es/</loc>
<xhtml:link<br>rel="alternate"
hreflang="en"
href="https://beassistance.com"
/>
<xhtml:link<br>rel="alternate"
hreflang="de"
href="https://beassistance.com/de/"
/>
<xhtml:link<br>rel="alternate"
hreflang="fr"
href="https://beassistance.com/fr/"
/>
<xhtml:link<br>rel="alternate"
hreflang="es"
href="https://beassistance.com/es/"
/>
<xhtml:link<br>rel="alternate"
hreflang="ru"
href="https://beassistance.com/ru/"
/></xhtml:link<br></xhtml:link<br></xhtml:link<br></xhtml:link<br></xhtml:link<br></url>

<url><loc>https://beassistance.com/ru/</loc>
<xhtml:link<br>rel="alternate"
hreflang="en"
href="https://beassistance.com"
/>
<xhtml:link<br>rel="alternate"
hreflang="de"
href="https://beassistance.com/de/"
/>
<xhtml:link<br>rel="alternate"
hreflang="fr"
href="https://beassistance.com/fr/"
/>
<xhtml:link<br>rel="alternate"
hreflang="es"
href="https://beassistance.com/es/"
/>
<xhtml:link<br>rel="alternate"
hreflang="ru"
href="https://beassistance.com/ru/"
/></xhtml:link<br></xhtml:link<br></xhtml:link<br></xhtml:link<br></xhtml:link<br></url>

[davebuts]

This post is deleted!

[MTBE]

Can i use a herflang sitemap with just the language attribute?

Please check that out

https://support.google.com/webmasters/answer/2620865?hl=en