Ethernaut coinflip JavaScript solution


I'm practicing smart contracts with Ethernaut. I'm at the coinflip stage, and I'm making this thread to ask for help on solving it with JavaScript, aka not deploying a smart contract to interact with my instance. I created JavaScript code to call the flip function with the correct guess, but by the time it's mined it's a different block and the guess is meaningless (yes I called it blockieBlock lol):

blockieBlock = await web3.eth.getBlock(await web3.eth.getBlockNumber()-1);

if (Math.floor(parseInt(blockieBlock.hash.slice(2),16) / factor) == 0) {
	console.log("flipped 0 bc block # is " + blockieBlock.number);
	}  else {
	console.log("flipped 1 bc block # is " + blockieBlock.number);

I used .slice(2) to get rid of '0x' in the beginning of the hash string, and I've verified with many blocks that this gave the correct hash and rounds down to 0 or 1 for the guess. I did this strategy in multiple forms and I couldn't get console.log( ____) to even work, but it's fine because I switched strategies.
When I switched strategies, I began trying to submit a transaction to the contract with value: 0 and data: contract.flip( blahblahblah). Here it is:

web3.eth.sendTransaction({from: player, to: contract.address, value: 0, data: contract.flip(Math.floor(parseInt((await web3.eth.getBlock(await web3.eth.getBlockNumber()-1)).hash.slice(2),16) / factor))})

It seemed to work and I got to 4 coin flips correct, but it seems to get an incorrect guess at 3 or 4 coin flips because I can't get higher than 4. I wanted to analyze what's happening by making data a longer string (the web3.js documentation says it's a bytes string I believe), but I didn't know how to do that without interfering with the boolean input of the function argument. So I tried making data an array:

web3.eth.sendTransaction({from: player, to: contract.address, value: 0, data: [contract.flip(Math.floor(parseInt((await web3.eth.getBlock(await web3.eth.getBlockNumber()-1)).hash.slice(2),16) / factor)), "hello"]})

This didn't work, and the testnet etherscan still only has this as my input data:

Function: flip(bool _guess) ***

MethodID: 0x1d263f67
[0]:  0000000000000000000000000000000000000000000000000000000000000001

I'm assuming since the function flip only has 1 argument, it wouldn't accept an array like this. Is there not a way to add more data to the data parameter of sendTransaction() ? I want to confirm that it is not luck that I got 4 and 3 successful coin flips before going back to 0, and I want to see if when I guess incorrectly with this function, it's missing the getBlock by 1 block, or see if it's sometimes getting the block wrong by a few blocks. I kind of like Google Chrome's console where I'm running these JS scripts, and I believe it's only possible because metamask or the ethernaut contract created an instance (a web3 instance with web3.js?) on the console for me? I wanted to try to see if I can hack each contract in Ethernaut with just the console, so that's why I'm looking for a different solution, but I'm not sure if I can do it by just calling functions in the console, or if I need to create a contract with a script, and then call the functions of that contract with JavaScript. To deploy a contract, you put the smart contract literally as the data argument into a sendTransaction function, right? Does that mean that the data argument of a sendTransaction() function is interpreted in Solidity language/syntax, even though the sendTransaction function is in JavaScript and ran from a JavaScript console? Is there a way to send more data to each transaction to monitor and analyze what's happening with my script?

Sorry for so many questions, I'm still a relatively newbie coder/developer/whatever this is called, and I'm just thankful for Ethernaut as a tool, but I haven't deployed smart contracts and I wanted to try hacking from just a JavaScript console. (I did send a transaction from windows cmd.exe through an instance created by Alchemy, but I don't even have Truffle yet or know how to use it to deploy a contract, and I like the instance Google Chrome and Metamask created).

Thanks in advance!