Help selecting background music

[Diogenes the Younger]

I am producing a series of YouTube videos regarding the US election and the current political conditions. The videos are designed to encourage people to vote. I have released the first one and plan to release at least 5-6 more over the next week or so. The first video was mostly patriotic and inspirational about the principles on which this country (America) was founded. For background music I used mostly America the Beautiful.

The rest of the videos are about topics like morals (or the lack of them), ignorance, corruption, the coronavirus, and climate change. These are not happy themes, so I don't want to use happy music, but I am not sure what to use. So I could use some help.

I have found several sources for music tracks at a reasonable fee, but I am having a lot of trouble selecting the right music.

If it's appropriate, I can post the YouTube link to my first video so people can see the style. This is a not-for-profit project that I am funding myself. If there are any profits, they will donated to an organization working to get out the vote or for the rights of women and minorities.

I would then be delighted to post early no-public versions of each video to get critical reviews here.

Let me know if this appropriate and I will proceed accordingly.

Thanks

PS: I will give credit to the source of any music and to Music Banter for any music found here.