Google Photos Takeout archive holds a JSON file with photo/video metadata, thing is that the naming for this JSON file is not always so obvious. This takes care of resolving the name with all the variants I found so far.

google_photos_takeout_metadata_resolver.py

import re as _re
import json as _json

JSON_EXTENSION = '.json'

def find_json_for_file(file: Path):
    try:
        if file.with_name(file.name + JSON_EXTENSION).is_file():
            # file.jpg -> file.jpg.json
            the_json_path = file.with_name(file.name + JSON_EXTENSION)
        elif file.with_name(file.name.replace(file.suffix, JSON_EXTENSION)).is_file():
            # file.jpg -> file.json
            the_json_path = file.with_name(file.name.replace(file.suffix.lower(), JSON_EXTENSION))
        elif len(file.name) >= 47:
            # fileee...eee.jpg -> fileee...eee..json
            the_json_path = file.with_name(file.name[0:46] + JSON_EXTENSION)
        elif bool(_re.search(r'^(.+)(\(\d+\))(\..+)$', file.name)):
            weird_search = _re.search(r'^(.+)(\(\d+\))(\..+)$', file.name)
            if file.with_name(weird_search.group(1) + JSON_EXTENSION).is_file():
                # file(1).jpg -> file.json
                the_json_path = file.with_name(weird_search.group(1) + JSON_EXTENSION)
            else:
                # file(1).jpg -> file.jpg(1).json
                the_json_path = file.with_name(weird_search.group(1) + weird_search.group(3) + weird_search.group(2) + JSON_EXTENSION)
        #print('Using ' + the_json_path.name + ' for ' + file.name)
        with open(the_json_path, 'r') as f:
            json_dict = _json.load(f)
        return json_dict
    except:
        raise FileNotFoundError(f'Couldn\'t find json for file: {file}')

@HJ1q I ended up using a different python script. (https://pastebin.com/SkYwF0Jy)
should be something like, nameofprogram "folder to be scanned")
It should rename all your jason files to match the name of the image files.

then i used exiftool (https://exiftool.org/) to apply the jason metadata to the images.
(https://pastebin.com/5Wr7yzkh)

That's all if i remember correctly form a year ago.
Also, do not run this on your only copy of your take out. Make a backup and
try it on a smaller set of images, so you don't waste time on something that
didn't do what you thought it would do.