4. wallet A unfortunately was deleted and as a result I need to show evidence that the transaction of 175 btc to exchange is likely done by me and not by the other party(scammer)
the only sure way that you can prove ownership of an address is by having
the private key of that particular address and signing a message.
just receiving some coins from that address is not proof of ownership. so even if you show that address A has sent you 175
BTC or even more transaction at other times, is not proving that address A belonged to you so you can't prove the transactions going out of that address were sent by you.
that would be like if someone sent you money via wire transfer and then you go to court trying to prove you own that other bank account just because it sent you money!