Advice would be greatly appreciated!

I (32f) have literally never taken care of my skin and it shows. I live off Diet Coke, barely drink any water. I vape (trying to quit) and I have eaten like doodoo most of my life (also trying to do better about and start drinking water). I have also had type 1 diabetes for 20 years (idk if that factors but I figure I’d mention it). I have rosacea on my cheeks and my skin is naturally dry. I feel like my pores are huge. And my skin just looks…yuck. It’s my biggest insecurity. This iPhone clearly has human eyes as the camera bc jfc you can see everything. This is the most vulnerable thing I’ve ever done on the internet (I always use a filter for my skin if I’m not wearing face makeup). In this picture I have on only eye makeup and I’m wearing a clear overnight face serum which is why my face looks wet. (Also my eyebrows are finally starting to grow back since I shaved them off completely in case you were wondering what the f is going on with them lol). I have lived with severe depression and haven’t really given a crap about my skin but recently me and my boyfriend have started some better life style changes and we both want to get a skin care routine started and change for the better. What would you suggest I start using for naturally dry skin/big pores? And also would you suggest I start getting Botox? Thank you for any advice!