I would like to improve the intense purging from tazarotene purging & acne scars/texture
I would recommend to drop the Mushroom Essence (it contains essential oils that can trigger irritation and inflammation, making acne worse). I think your moisturizer can be more effective as well. I'd consider a product with Niacinamide instead, for example: https://whatsinmyjar.com/product/dermageek-nourishing-facial-night-cream.
It is crucial to wear a daily broad spectrum sunscreen to improve and prevent post-acne pigmentation & scarring. This product is a good option, for example: https://whatsinmyjar.com/product/la-roche-posay-anthelios-uvmune-400-invisible-fluid-fragrance-free-spf50.
And please try to gather all the patience you have to get through the purging. It will get better and the result is worth it 💛.