As Andhra Pradesh State Council for Higher Education ( APSCHE )  hasn't released the official cut-off details for this year till now, so we have to follow the previous year's cut-off informations for making any decision regarding your admission possibilities. You can check those details of previous year from the following website:

https://engineering.careers360.com/articles/ap-eamcet-cutoff

Hence it's obvious that since you're a OC (CAP) candidate it's just impossible for you to get admission in any kind of Government instituions in Andhra Pradesh because to grab any government seat you've to secure atleast 16-17k rank in AP EAMCET 2020 where your rank is far behind from that.