Translate results in SP Polls and make stars instead of radio buttons

Hi,

I hope I'm posting this in the right category because I couldn't find a category for SP Polls.

However, I'm having trouble translating the Vote and Votes in the results.

I've already tried creating language overrides for the language strings COM_SPPOLLS_VOTE and COM_SPPOLLS_VOTES, but that doesn't work.
I've also cleared the cache and all cookies.

Secondly, I'd like to have star images instead of radio buttons.

I've already created an override for the module, and I think I need to look for it in this section of the default .php file:

<div class="radio">
                <label>

                    <input type="radio" name="question" value="<?php echo $key; ?>" <?php echo !is_null($vote) && ($value->poll == $vote) ? 'checked': ($key==0 ? 'checked': ''); ?>>
                    <img src="https://mysite.nl/images/example/ster.png" alt="Option 1" class="ratingstar">
                    <?php echo $value->poll; ?>
                </label>
                            </div>

I've managed to add an image (and set the radio input to hidden), but then you get (obviously) the same image for every vote, so I have to repeat it somewhere with the different options (Option 1 to 5), but I'm not very good at PHP.

Is there a way to simply get those 5 options, each with its own image?

Please see the image to see what I mean.