If you look pale, you should mainly pay attention to the internal tone. I don't know how your endocrine situation is. Do you have constipation or anemia? If you have a bad complexion and large pores caused by constipation, you can take bee pollen, honey or fructooligosaccharides (which are rarely sold in domestic counters now, but can be bought on Taobao, with good effect and no dependence).
If it is anemia, you can eat some Ejiao properly. These can improve skin tone.
If you choose to eat collagen, you can eat it every day for the first two months, and you can see the effect in general 15-30 days. After two months, you can eat it once every three days. Reason: Eating too much will have a burden on the kidneys. So be moderate.
I used to have big pores and very dry skin. After conditioning, the face becomes rosy and the pores feel obviously delicate. These are my little suggestions, I hope I can help you. If adopted, I hope you can persevere.