It's worth noting that the total number of lottery tickets in the weekly lotteries has become noticeably lower in recent weeks than it was 5-6 months ago. This indicates that the activity on the freebitcoin site has dropped,
You are right about the decrease in total number of tickets and the less interest in freebitco, but you should consider the increase in bitcoin price too.
The higher the bitcoin price, the higher the cost to get lottery tickets through wagering.
The decrease of lottery tickets in the Freebitco as the result of the on going issue of withdrawal and other us im the website and that is a good indicator foe them to rebounce back buy solving all the outstanding issue in the site. People are not interested to participate in the site because after winning you might not withdraw the winnings so instead they use another sites. If the price of Bitcoin is high, they can use another sites to book tickets and wagering there that they will not have problem in withdrawing.