Why don't you just play like beach volleyball or tennis, like myself. And then don't wear a shirt, and wear sunscreen SPF 30. Or swim.
I don't use any tanning things. I want natural colour
lay in a pool if you can, it does actually help, but like lay on a pool floatie or something not just float. maybe splash water on yourself occasionally to help
there are special lotions that are intensifiers, not like a "instant tan" that you can use (in addition to sunblock) that will help you get color faster/better. The best ones I've had are the ones designed to be used in a tanning bed, but you dont have to use it for that.
put on music or a podcast or something to listen to while you tan your stomach/front side (kills time faster imo), and then if you want to while you tan your back, watch Netflix or something.
tanning is literally the wypipo equivalent of skin bleaching. just accept your natural skin color hon. i know i'd rather have white skin than white skin with age spots and melanoma