Hi, sts can't do anything to make pvp more active unless they bounties or gold drops or something. They added BG and its a great success as far as involving more ppl goes. Dueing events pvp will be generally inactive. Also the brackets that u try are also very imp. 58-61 is always active bcs more people play there. 13-15 is not that active but if ur in a good guild clashes will pop up often. 1-10 is also active but idk the condition there rn.
In Twink lvls its quite rare for new people to join also random players won't join bcs they'll be easily farmed by alryt geared players