I accidently pressed delete instead of recover, is there any way I can retrieve this messages?

Not with your iphone 7 not running iOS 16 there isn't (easily).

When using a mobile device OS version prior to 16, and using iCloud with Messages, when you deleted them they are gone permanently. If you were not using iCloud with messages you may be able to restore them from a backup but only if you are prepared to revert the entire contents of your device back to the time when the backup was made. See this Apple Recommended 2021 post by ASC contributor Chris0107: trying to ser if theres a way i can recov… - Apple Community

Daisy209_90 wrote:

I accidently deleted important text messages that I needed for a court case.

I panicked and quickly tried to retrieve them but was so nervous I pressed delete instead of recover.

Is there any way to recover these messages.

See the first two bullets of this document Recovering deleted texts and iMessages - Apple Community