This article explains how to remove sponsored ads that appear in your Instagram feed. It is not actually possible to delete them entirely, but you can remove them one at a time. This way, the ads that will be shown to you in the future will be different than the ones you have deleted.
Steps
Step 1. Open Instagram
The icon looks like a colored camera.
If login does not happen automatically, type your username and password in the appropriate fields, then tap "Login"
Step 2. Tap the icon that looks like a house
It is located in the lower left corner.
Step 3. Scroll down to find sponsored publications
They are marked with "Sponsored", which is at the top of the post, under the name of the account that posted it.
Step 4. Tap the button at the top right
It is located at the top of the publication, next to the account name.
Step 5. Tap Hide Listing
Step 6. Select an answer from the questionnaire
With this ad hidden, Instagram will use your feedback and will no longer show you these types of ads in the future.