CSV/excel of football fixtures

Not sure what you are looking to do, but collecting data is hard work and time consuming.

https://www.betexplorer.com/results/soccer/  has lots of kick off odds data. You have to click and open each game to see the odds.
Pre game comparison odds are also available on this site during the few days leading up to kick off
https://www.betexplorer.com/

I'm not plugging them, just trying to help you.
I have league stats going back 8 years, but not odds

BF historical data should give you what you need.

https://historicdata.betfair.com

Are you after this data in retrospect (then as Pete says, BF historical data is the place to go) or are you looking to get all of (eg) today's matches with their MO and O/U 2.5 prices (in which case you could do it via the BF Public API, but that might be a bit sledgehammer to crack a nut)?

I am looking for data of matches yet to kick off. So match odds and over 2.5 goals for matches for that day

As Longbridge says, you can use the Betfair API to pull it down. If you need bookies' prices
you're going to have to find a way to scrape their sites. You could get all the matches from
BF and use that as the starting point. Scraping data is a pain because you'll have to adjust
your code all the time as they change the way they present their odds.

https://historicdata.betfair.com - went to this link to get data on matched bets for correct score football, for matches in the past. Definitely the right link... but I am really struggling to open the files... They come as BZ2 or BZIP2 files.. I attempt to access them using winzip, but it does not open the files... Any help on accessing this data greatly received! Thanks

BZ2 files should open in WinZip no trouble at all.

Is your problem unzipping the files or understanding the contents?  They're in JSON format, so if you're not a programmer used to Java/JS data standards they are not very readable.

You can use the parsehub free version to scrape data. Its pretty simple to learn after a little trial and error