Hi @fransonspeed I found a few more helpful resources for you from the community.
You can follow and post to this thread if you think this functionality would be helpful to add in the future: https://github.com/WordPress/gutenberg/issues/21886
Since this issue exists you may absolutely leave a comment in support of it.
As you might see other ways are mentioned to use a find and replace functionality at the moment such as:
– Search & Replace functionality like the one available in TinyMCE.
– WP-CLI support for Gutenberg Search & Replace
If not, the previous comment sounds like a helpful way to work through the issue at the moment.