Sign up at https://www.buzzsprout.com/
My podcasts > Create a podcast

Once the podcast is created, upload your mp3 file (you can record yourself or hire someone from Fiverr), if you want to go more black hat a bit, just download another podcast which have no intro or outro from Soundcloud or related.
Be sure you fill the fields as on other 3rd parties is required including: “See more options: Artist, Tags, and Custom Episode Webpage”
On episode description, add a small article and try to include in first sentences the anchor + URL you want to.
This is how my page looks like

All good? Hit the Save Episode Details
Click on it and publish

Now, drag your mouse on the left image and Update Upwork > then start filling with details and again add naked url and also include all details.

Once all saved, press on “Website” menu, and you can play around customizing your page.

Now, if you click on the episode, you will see the URL
— — — — — — — — — — — — — — — — — — — — — — — — —
Follow a similar strategy on the following websites as well
https://www.breaker.audio/
https://castbox.fm/
https://overcast.fm/
https://www.pocketcasts.com/
https://radiopublic.com/
Note:Most of the websites require a podcast to be uploaded, you should download one online and upload it on the websites so you can place a link