Is it a good idea to get my phone repaired from a local shop in cheap price or with a service centre for huge price?

My phone's battery isn't working properly, it gets depleted fastly and not charging properly. The local shop sre telling me they'll replace my battery in cheaper compared to service centre where they're demanding unnecessary charges of motherboard, connectors etc. around 6000-7000 . What would be the best option as local shop will do a shoddy job afaik. Is there any place where I can get my phone repaired without uncesaarily charges and with good quality?I'm from east Delhi. My phone is IQ00Z35G bought in 2022. P. S don't tell me to buy a new phone please.