I’m an idiot about it but never been banned. I just goto a low population PvP world away from any players in the wild and auto click. Never had an issue running be auto clicker 20/24 hours a day no intervals. Haven’t done this in at least a year since I just pay levelers when I can to do it by hand. As for items to alch, I like gold necklaces or bracelets.
The way ive got 99 magic on any account ive created is stringing gold jewelry. its semi afk whilst able to work on other accounts and gives some crafting exp as well and u still get some gp back in return when selling the amulets.
Stun-alching cheap&fast xp but it's hella click intensive, can get tedious real fast. bursting&barragin certain slayer tasks (Dust devils&nechs in catacombs for example) usually makes you a low amount of profit. Whenever I used to alch on my pures I usually just alched gold amulets, they used to be kind of good margin for alchin never really cared to look for better. Charging orbs profits you kinda of a lot but you have to go through wilderness to charge air orbs, also it's pretty slow xp and tedious.