Open the project and edit Pages >> Post.cshtml adding the following code

<div>
    <script src="https://cdn.jsdelivr.net/npm/publicalbum@latest/embed-ui.min.js" async></script>
</div>

The reason I chose Post.cshtml instead of the one of the layout partial views is, in my case, I will only be showing the albums in post and nothing else. Your usage may be different. Choose your target page accordingly.

Then go to https://www.publicalbum.org/blog/embedding-google-photos-albums use the embed tool pasting in your Google Photo album shared link.

Piranha CMS will not allow the SCRIPT tag to be inserted into a post, hence the hard coding.

Grab everything else and go into post you want to display it in. Switch on CODE view and paste in the code.

Looks something like this:

<div class="pa-gallery-player-widget" style="width:100%; height:480px; display:none;"
data-link="https://photos.app.goo.gl/3Vx9vVF1LUKuK8Ep9"
data-title="Elite:Dangerous - Anaconda - Jumpaconda"
data-description="6 new photos added to shared album">
<object data="https://lh3.googleusercontent.com/dAgMHgSyV0clqZHVaFXHKuvhSPZS1AXqHpH3MPeuAgs8g4xWorv_XFjFlTVLdf0gXOV401lwaUbyjy3OAtizGlJSe8Im2CxsPGkXr-uedmZujdrH8TNMiDjEI2ixz8iPSo7gFwusEQ=w1920-h1080"></object>
<object data="https://lh3.googleusercontent.com/oQZQCch-ukWpIK0VF8fQFPcm7MnJ8_1irxdvwUrFqZ5Iqe53oVC_OHhU41FfsSO2Qpc78P9jx2sMqSDzRlP67JRbWcEdX-xP_t2CiQho0AFHZvz-Q-Ent9usPT6i4-GRXiKPStYaKw=w1920-h1080"></object>
<object data="https://lh3.googleusercontent.com/R6HljqedHB_MgYTn-8iwcfzAzDfX__DaYJ-ba64PK-dORcVZ3TN1fSSBVpLObCMV-ktEXZ9fxew4J71oNamZiJBpkrePaIlTIxP89xavvYRCroVZftylW8_gOYKEDMXGR72NvraGng=w1920-h1080"></object>
<object data="https://lh3.googleusercontent.com/rF_yvMx8wrrsICwrBNE_6d-Tj1MM78Aa19ETxi189XX6ZvYNvQeDfNvKxJxY7C_uLbv1psTZ2NRm0T4HgIVo5Q0D0Cz_Gtc9eMEYnpq4IbiOyhL8JgxeAlJ9QnVrqzCapY-y6QweUA=w1920-h1080"></object>
<object data="https://lh3.googleusercontent.com/wjnONyH9YdHhy71kR9IaNEOaKjv5WdsqhFTs-SOlCW5VZSLHy7pv5SzabWL9488jI4I0cfwKESqgTeUcak90e1TRSK-SB26lhvXXPMRh-vkCXXIWW3-6Y2I5AM2YzXDVfLbUEQoxGg=w1920-h1080"></object>
<object data="https://lh3.googleusercontent.com/APlkRqXxbFbUkgWRdA9tmTgbGEc6DKx1l-TppTCrJ-6J0qYZ8YuwPkDDTUiJDh4rO_s7frpffmgde3PxyYvwu-ty_0lDetfTNxTLKKgW8Zcromeu7KINEkvmz7OpIvRJdxEvKFsJXQ=w1920-h1080"></object>
</div>

Save, Publish, Done!