No, you usually can’t apply fresh in the Rajasthan stray vacancy round if you didn’t register in any previous counselling rounds.
Only candidates who were already registered earlier can take part in this round.
The stray round is meant to fill leftover seats from the main rounds.
Fresh registration is not allowed unless the official notice specifically says so.
Keep checking the Rajasthan NEET UG counselling website for any new updates.
If they open a special window for new applicants, that’s when you can register.