The tickets go through "hot" and "cold" streaks. Zebekiya, a lottery veteran in New York posted his theories, and observations about printing, ticket distribution, and a variety of other topics relating to scratchoffs. He mentioned something called "seeding" where some lotteries intentionally send big wins in some areas often to stimulate revenue in that area by boosting local morale. People think "Omg, that guy just won $1k" and then go around and tell their neighbors, dentist, cat, etc.
When I first started playing, I had a system when I started the big tickets. I'd only buy tickets in the range of #18-#25 on Florida Cash, or #05-#13 (preferably #7-13) on $ 20 Gold Rush. I had noticed that I had a "higher" likelihood of winning my money back whenever I bought tickets in these ranges, and noticed a tendency of the other parts of the rolls being "cold" in my area. Of course, we know big winners can come anywhere. Even tickets 000, or the last ticket on the book.
The one nice thing, and bad thing about $20 and $25 tickets is how quickly you can gain or lose money. Those $100 winners are especially common on $25 tickets, but if you get in the habit of chasing, you can lose that + more within the span of 10 minutes.
It sounds like you're playing it smart, and only doing 1 ticket at a time. Please continue to follow this philosophy, I really wish I stayed firm to this rule. The 1 ticket, or 2 tickets at a time is the best way to do it. I've hit $500 on those Gold Rush tickets, and the $1k on the post above from FL Cash following the 2 tickets from roll rule.