Is there a way to search the topics? and the thing I wanted to search is, Is there a way to change your Tagline. Your tagline at the top of your profile?

As delightfulillusion pointed out to change your 'Headline':
https://mingle2.com/user/edit_profile

To find topics, I Google a few key words attached to Mingle2,
and up they pop every time ;-(

Example: Here is what popped up when I typed in
"mingle2,changing your headline":

'How do I change my headline? | Mingle2
https://mingle2.com/topic/89263

Mar 3, 2008 - 3 posts - ‎3 authors
Thanks for your help!!! I guess sometimes we can't see for looking . . .
Newbie seeking profile input
8 posts
Jan 20, 2018
How can I change my mingle2 settings?
5 posts
Dec 24, 2010
change username?
14 posts
Aug 23, 2010
Whats your profile headline?
20 posts
Jul 1, 2008
More results from mingle2.com'

Very efficient ;-)

Thank you to both of you ladies. That helped out a lot. I appreciate the guidance.