Where is your proof?
They have thermal sensors on their forearms and are known to climb trees. Why wouldn't they approach from above?
Ticks climb low vegetation (not just grass) and wait for a host to pass by ("questing").
If you're going to disagree with basic textbook biology knowledge, the burden of proof is on you.
https://www.cdc.gov/ticks/about/index.html
https://projectlyme.org/ticks-debunking-common-myths-and-mis...