My question now is, how do I transfer funds from one network to another? Up to this point, I have a decent sum of money in BUSD and USDT. Due to being a complete newbie regarding this matter, I don't want to mess anything up and end up losing my funds, it's not a banking service, thus, if I do something stupid, there's a high chance that my money is lost on the blockchain.
I don't want to be mean but I think I should tell you that most likely you are not the best DEFI investor if you don't even know how to transfer your founds through chains ... how the hell you think you are experienced enough to say that "but there are far better ones in other chains.".
Now back to your question:
Option 1:
Deposit to CEX (centralized exchange) that support cross chain withdrawals. Most CEX do that. For example binance or even hotbit:
Option 2:
Chose a good bridge and fallow instructions. For example celer bridge or anyswap.