How do I pass variables from Qthread to MainWindow? (PyQt6)

Question

I have a process (a websocket) running in a Qthread class. What I want to do now is to edit some GUI items to be able to print the data im receiving. Since you should only edit widgets from the main class, I was thinking about sending variables from the thread to MainWindow. However, ive been failing at it, even after following some other posts here.

so far my post looks like this:

class Worker(QObject):
    finished = pyqtSignal()
    progress = pyqtSignal(int)

    def __init__(self, parent = None):
        # Inherits a variable from the main window 

    def run(self):
        # websocket function goes here
        self.finished.emit()

and then in my main class I have:

class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow): # Functions related to the class

def runLongTask(self):
    self.thread = QThread()
    self.worker = Worker(self.symbol)
    self.worker.moveToThread(self.thread)
    self.thread.started.connect(self.worker.run)
    self.worker.finished.connect(self.thread.quit)
    self.worker.finished.connect(self.worker.deleteLater)
    self.thread.finished.connect(self.thread.deleteLater)
    self.thread.start()