I was going to suggest you contact Synapse since you said it says pending, although that did sound unlikely given that I can see you received the Arbitrum funds as I have shown you.

For DMs, you should probably ignore them. There are some services that help you "revoke permissions" you previously gave to sites.

An example: https://revoke.cash/ (I have used this one before, but do your own research first)

You can connect your wallet, and revoke the permissions you gave before but this is only useful when you suspect that you've dealt with a scam site who might still be able to access your funds later on.

Right so from the transaction history, it appears that you were trying to bridge USDT from Binance smart chain to Arbitrum one? Is that correct? Do you remember doing so?

I'm not sure where do you see that the transaction is pending though? From what I can see, you have received the funds two months ago on Arbitrum, and then sent them somewhere else:

https://arbiscan.io/address/0xb6336Ba4Dcd8aC7caEde759460342eA46F387cfC#tokentxns

And if you check the transaction hash, there's is a mention of "Gelato network". Now apparently Gelato network is just a developer service people use, so I don't think you used it personally.. It must've been an indirect use through some other service.

Does this tell you anything? https://www.gelato.network/

Is like your wallet have being compromised by hackers. How did you keep the seed phrase of your trust wallet. Did you store your password online, or clicked on unexpected links. Check your wallet to see which address the funds was moved into and which day if there is any information on that in your transaction history. Check what OmegaScream said above.

It's probably this[1][2]. A bridge/DEX platform, I never used them but they look legit. Do you remember connecting your wallet with them at all? Try to connect your wallet, and see if you have any previous transactions with them.

[1] https://x.com/synapseprotocol
[2] https://synapseprotocol.com/