why many retransmission logs

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I'm totally new to wireshark and network issue analysis, I have an application it sometimes encounter exception of "the underlying connection expected alive is closed" And i captured the logs using wireshark, and see that every time error happened there is about retransmission loged and then [RST,ACK] , and i also checked the WFP, there is no drop packets by firewall filters.

anything i can check next to figure out the problem? and I'm using windows 10 in NAT, and the target server is in public.

And i can't export the filtered log and paste here.