How do i stay really tan w/o ruining my skin's health?

i've been tanning for 2 years now and have noticed some changes on my skin… i used to have 2 or 3 "beauty marks" (like large freckles, no bump) on me but after tanning ive noticed more and more showing up and old ones have gotten a bit bigger. i dont like beauty marks and dont want anymore! also i dont want them to turn to moles or skin cancer! and im sorta scared to get into spray tanning b/c im scared ill be a fake orange color or smell funny. real tanning gets you that pretty, real, brown/tan color. idk what to do… i feel a lot prettier tan than white. in my opinion i look ugly/gross white and hate it. what should i do? anyone who's spray tanned before think its a good option?