Buyer's remorse or failure to purchase a system suited to your needs is not grounds for refund or replacement. This is an entry-level, low-end consumer grade notebook.  If you need something more capable, you have (or had) 30 days from shipment to return for refund.  At this point, sell the system for what you can get, and purchase something suited to your needs.  
I have purchased Dell Inspiron 15 3511 with 2gb graphic card at 63k INR in may 2022. That Laptop have many issues by day one. i managed that but after 3-4 months it starts heating too much and got lagging. i tell dell technical support they send engineer to my home and he changed some parts nothing happens to laptop after that they again send engineer and they changed whole motherboard. after changing that im using laptop normal usage suddenly it becomes dead. next day i call dell team for replacement. they are not hearing my issue. after 15-25 days they tell me to gave same model. i tell them to give me different model with same price because this model is unable to run my software and games and this model is faulty. i have seen many reviews but they are not listening me they always tell no one can help. I also tell them to refund my money but no reply from them. I'm very very unsatisfied with Dell service. Give me Different model that i want in same price or refund my whole money 63k INR so that i can buy new one for me  
Inspiron 15 3511, worst service