Lounge access after landing

I’m booked on a suites flight from Mumbai to Singapore and arrive in at about 8am. I then have a flight to Paris on Air France in Economy (different tickets so self transfer) and have a layover of about 14 hours. Would I be able to access the Private Room or First Class lounge after landing in Singapore even though my next flight is on a different ticket and on Air France and also in Economy. Thanks!