It’s super rare to find value bets in pinnacle. They are good for sure bets, but not for value bets. Like @Nifty said, it’s better to use soft bookmakers here.
Pinnacle is the number one bookmaker, that you must have, if you do sure betting since they will be the sharp bookmaker counter part.
For value bets you need a soft bookmaker.
You don’t need a sharp bookmaker counterpart for arbitrage. You can just do arbitrage between soft bookies. As long as the odds are different enough from each other so an arb opportunity does set up. In fact it usually even works better between softbookies since they are more likely to show wrong odds. All my most profitable arbs been between softs.