Hi @Dinesh_Venkat,
Since you’ve opted for the old regime, you can can claim the HRA exemption while filing your ITR even if your company hasn’t included it in your salary slip.
Make sure you keep rent receipts and bank statements as proof of rent payment. Since your employer hasn’t considered HRA, it won’t reflect in Form 16, but you can still claim it separately in your ITR.
This is assuming that HRA is a part of your salary structure and CTC. If not, you’ll not be able to claim HRA, however, you can claim a deduction for rent paid under section 80GG.