Cannot easily change some 'text' in PSD AI.

AI is not magic. This can be done easily with traditional Photoshop technique.

I want to change it from CRUZ to RUIDERA but when I use the generative it doesn't do it.

By @AntDX316

Traditionally, generative AI has not been needed to solve this problem. One existing solution is to use Match Font. You can have Photoshop analyze the text and try to identify the font, and if there is a close match in Adobe Fonts, it can activate the font, and then you retype the text using that font, using whatever characters you need.

For more information, see:

https://helpx.adobe.com/vn_vi/photoshop/how-to/match-font-image.html

In your example image, if Match Font finds a good match (it kinda looks like Trajan), you can erase the existing text with the Remove tool, then type your new text over it using the font that Match Font found, and then maybe use a layer effect such as Bevel and Emboss to match the sculptural look and lighting.

You may be better off deleting the old text, perhaps using the Clone tool, and then recreating the new text on a separate layer using the Layer Styles effects and Blending modes.

@AntDX316 

Generative Fill is not the "be all, end all" and it does not do everything. You can use GF to remove the existing label, but it won't work to add the new label.

You can do that with traditional methods by typing text and formatting it with Layer Effects, Styles, etc. It will take a bit of Photoshop knowledge, and an artistic eye will help.

Jane