How to make straightened hair last the whole day?

Im a 2a thick wavy haired girlie and I sometimes straighten my hair when I feel like it. But in the middle of the day, I would observe na it comes out frizzy and poofy pa rin even if I straighten it.

Searched all over reddit rin and they recommend to use glycerin free products pero may glycerin kasi yung heat protectant ko and I find it difficult to find products without it 😔

Products used:

- tresemme protecting heat spray

- lucido l argan oil

Please help this girlie out. Thank you so much everyonee!!