Can I re-enter Thailand for 30 days visa-free after spending 3 months there earlier this year?

The user, with a Polish passport, inquires about the possibility of entering Thailand visa-free for 30 days after spending 3 months there earlier this year. The community responses emphasize that immigration looks at history over a longer period (12 to 18 months), and other users share their experiences of re-entering without issues as genuine tourists. Suggestions of applying for a 60-day tourist visa instead of relying solely on visa exemptions are also mentioned.