Photos are out of sequence. Can I rearrange them? How?

Photos

Photos groups your library into Moments, Collections, and Years arranged by time and location.

Moments: See groups of your photos and videos taken around the same time and place, like an afternoon at the beach.

Collections: Find distinct Moments taken at the same place, like your vacation in San Diego.

Years: View your entire library in a mosaic of all the photos and videos that you've taken each year.

1. When you tap the Photos tab in iOS, you see your library grouped by Moments. Tap  to view your library grouped by collections, and tap  again to view years. On your Mac, use the Moments, Collections, and Years tabs at the top of Photos.

Tap or click the location of any Moment, Collection, or Year to see a summary of its photos and videos, the people in them, a map showing where they were taken, and related memories for you to explore.

For You

In the For You section of Photos for iOS, you can see Shared Album activity, get ideas for adding effects to select photos, and find Sharing Suggestions — collections of photos perfect for sharing with friends.

For You also helps you relive your favorite moments with Memories. Photos searches your photos and videos to find events, trips, people, and more, then presents them in beautiful collections. That way you can rediscover a weekend hike or big events like a first birthday.

On your Mac, you can find Memories in the Photos sidebar.

Organize and find your photos - Apple Support

https://support.apple.com/en-us/HT207368

I added photos from my husbands phone to an existing album on my phone. The photos are out of sequence. Can I rearrange them? How?

Did you add the photos to a standard album or a Shared album?

• The photos in a shared album are always sorted by the date you added them and cannot be rearranged,
• the photos in any album that Photos is creating automatically are always having a fixed sort order,
• but if you added the photos to a standard album you created yourself, you can manually rearrange them. While viewing the photos in the album hold down on a photo and drag it to a different position in the album.