With this script, you can remove tweets you have tweeted on Twitter. Has been running in search for "(from:{YOUR_TWITTER_NICKNAME}) until:2022-09-01" on 2023-09-06. Don't forget add your nickname to line 9. (The script begins 60 seconds after pasting the code.)

twitter-remove-tweets.js

const timer = ms => new Promise(res => setTimeout(res, ms));

setInterval(async () =>
{
	// Get all tweets
	const allTweets = document.querySelectorAll('.css-1dbjc4n.r-18u37iz.r-1wbh5a2.r-13hce6t');

	// Filter tweets 
	const filteredTweets =  Array.prototype.slice.call(allTweets).filter(x => x.innerText.startsWith('@{YOUR_TWITTER_NICKNAME}'));

	for (const tweet of filteredTweets) {
		tweet.scrollIntoView();

		// Click three dot and open action menu
		tweet.parentElement.parentElement.parentElement.parentElement.parentElement.querySelector('div[data-testid="caret"]').click();
		await timer(150);

		// Click delete button
		document.querySelector('.css-1dbjc4n.r-1loqt21.r-18u37iz.r-1ny4l3l.r-1j3t67a.r-kmv1fd.r-o7ynqc.r-6416eg.r-13qz1uu').click();
		await timer(250);

		document.querySelector('div[data-testid="confirmationSheetConfirm"]').click();
            await timer(250);
	}
	await window.scrollTo(0, document.body.scrollHeight);

	console.log('Finished this run')
}, 60000);