sending solana from coinbase exchange to phantom (repeated failure)

SolanaSolana
$35.55
2.19%
self.solana1m ago
After buying some solana I tried sending a small amount (about $5 worth) from coinbase to phantom a few days ago and the transaction never went through. I waited a few hours and tried again. Then waited a few days and tried again. Finally today I was able to get about $3 through. After that success I tried sending about $10 worth to phantom and again it did not go through. So about once out of 6 times I was able to successfully transfer solana from coinbase to phantom. Is this normal?