First time Focaccia.. i dont bake but now im obsessed with figuring it out. Help lol

Im not great at baking but what i dont have in skill i make up for with enthusiasm. I tried a recipe i found online and cant get it to turn out how its "meant" to..

280gs flour (ap)

240gs lukewarm water

1 tsp yeast

1 tsp sugar

1 tsp salt

2 tbsp olive oil

• mix yeast, sugar & water/ then add flour/ mix

• add salt & olive oil then fold (until you cant fold it anymore)

• cover and set aside for 2 hours

• at 30 mins to go preheat oven and pan at 230°\gas mark 8

• lightly flour parchment. divide into 4/ place on parchement

• drizzle with olive oil, gently shape and poke

• add a little corse salt & thyme

• slide onto preheated pan and bake for 20-30 mins

theyre cooked through and delicious but too flat. the video with the recipe shows very light airy bun texture.

(im in ireland)

any critique/ help is very welcome!!