I need to ask few more questions before answering your query. Early consultations can prevent complications. Kindly contact me on whatsapp chat  (84960595 six five) Dr Faisal Zoheb MBBS , MD PAEDIATRICS , PGPN (BOSTON), Neonatology fellow ( Newborn and vaccination specialist )

Consult with Pediatrician physically for further evaluation and treatment

This behavior is quite common and normal at around 4 months of age. Many babies at this stage become more sensitive to unfamiliar environments, loud sounds, bright lights, and new faces, which can easily overwhelm them. This is sometimes called early stranger anxiety or sensory overstimulation. Since your baby is calm and manageable at home (a familiar and secure environment), it strongly suggests that this is not a behavioral problem or illness, but a normal developmental phase. At this age, babies are still learning to process external stimuli, so crowded places like functions or church can make them feel unsafe, leading to loud crying that is difficult to soothe. The fact that he cries with tears and settles at home is reassuring. No medicines are required for this condition.

New environment, so much to process leads to overstimulation. They will get acquainted eventually

Visit physically to nearby pediatrician

This is totally normal as this is just over stimulation to surrounding and Early stranger anxiety that's it Dont worry it will go by itself