How do I prepare my BBQ?

These are the ingredients in the photo.

1.pork belly
2.sprite
3.pepper
4.salt
5.garlic
6.calamansi
7.olive oil
8.apple cider
9.mamasitas bbq sauce

I want my bbq tender and juicy, and to achieve that the secret of it is to be marinated with sprite softdrink in it, (You can also use wine but it's expensive so I prefer sprite).When I want to eat bbq, I have to prepare it ahead of time at least 2-3 days. First, you have to massage the pork with salt. Add pepper, calamansi and garlic then massage thoroughly. Add apple cider vinegar and small amount of olive oil. (The oil will help the meat absorb all the ingredients and aside from that, grilled food like meat may cause cancer because of carcinogen substance if you add oil the meat will not get burn). Then pour sprite and mamasitas bbq sauce and massage the meat again then refrigerate it for 2-3days. Then you can just grill it in medium well to make it juicy.