Should i still attempt to do ROTC my freshman year of college if I haven't been accepted.
Why wouldn't you? My DS started AROTC with no scholarship and by the middle of his freshman (MS-I) year had earned a 3 year campus based scholarship, later extended to 3 and a half.
But even if he didn't get the scholarship, he could have still contracted without one, receiving a stipend and still commissioning upon graduation.
The key is to get good grades, participate in AROTC activities and do well on the APFT.