You can always just add custom meta tags in your markup. React hoists them to the head. Havin said that, your pages shouldn't be client components. It's a total anti pattern.

I used 'client' to make works Bootstraps js

there's no any other way then?

This sounds wrong and it's likely that you should do integrate the library differently.

I'll give a try again

There will technically never be a need to mark pages as client components as you opt out of pretty much all app router and RSC features by doing so.

Regardless of this you can always hoist metatags in any component for the purposes of your original question.