Site builder - gallery style question

Hello,
I had a gallery that was thumbnails but different sizes (3 rows of 2 columns, top row had a square thumbnail and a wide rectangle thumbnail, 2nd row same but reversed, 3rd same as top)
I messed up and had to start again from scratch :frowning: and now can only get a gallery of equal size square thumbnails.
I am using the same template (Seniors Club) and was actually copying the published page till I accidentally hit the publish button. (I’m not as big a numpty as I appear to be writing this request, honestly!)
Does anyone have any idea how i adjust the gallery or find the old style one? The only options I can find are thumbs/slideshow or list.
many thanks in advance
nev

Is it the zyro builder?

It is yes, and in the last 10 minutes I worked it out! The gallery I had (and lost) was in fact a ‘block’ item and not a ‘gallery’. So for anyone else looking for an alternative gallery, drag and drop a ‘block’ to your page and then choose - media, its under there.
Thank you for taking the time to respond.
cheers
Nev