Since i joined the crypto world i didnt face any problem regrading wallets but i see that many people lose funds...somtimes the situation is normal like when somone share his private key or back up phrase in a scam website...but lets imagine that somone open a nwe wallet on trust and start using it without even keeping the phrase...is there a way to enter his wallet and make transactions without even having the back up phrase?
I didn't quite understand the question are you asking if they could enter the wallet or connect it on other site without entering the seed phrase or private key and make a transaction?
If that is your question then it would depend on the site that they would go for example pancakeswap only needs to connect on your wallet and doesn't need you to input your seed phrase.