Create RSS feed from excisting XML

I have product feed with free woocommerce feed https://www.e-naturaliai.lt/feed/products/

But i need to change tags of xml..
for example i need that rss would be in this xml format:

<?xml version=”1.0″ encoding=”UTF-8″?>

<product_feed>
<products>
<product id=”25″>
<Title>Wilmersburger klasikinis sūris</Title>
<description>Wilmersburger vegani?kas sūris, klasikinio skonio.
Sud?tis: vanduo, nehidrogenizuotas kokos? aliejus (22%), modifikuotas bulvi? krakmolas, jūros druska, kvapai, rūg?tingum? reguliuojanti med?iaga: citrin? rūg?tis, konservantas: sorbo rūg?tis, spalva: beta karotinas.

</description>
<image_url>https://www.e-naturaliai.lt/wp-content/uploads/2015/06/Klasikinis.png</image_url&gt;
<product_url>https://www.e-naturaliai.lt/produktas/veganiskas-suris/</product_url&gt;
<item_price>3.35</item_price>
<special_offer></special_offer>
<item_old_price>3.35</item_old_price>
</product>
…
and so on..

Here the xml link that i need to create RSS with it : https://www.e-naturaliai.lt/rss.xml