Many bitcoiners solve this problem by using an air-gapped hardware wallet. You run a node or a watch-only wallet on your internet-connected laptop, but it doesn't have any private keys. It can only see your wallet balance, not spend. 

When you want to spend, you create a transaction with this laptop and then use QR codes or sd cards to transfer the transaction to your hardware wallet for signing. After your hardware wallet signs the transaction, you use the same method to transfer it back to your laptop to broadcast to the network. 

BTCSessions has a number of Youtube tutorials on how to do this. It's worth checking them out. 

Wizardsardine

the thing to look for is PSBT

partially signed bitcoin transactions 

itsrealfake

bitcoin

Call for Bitcoin User Interviews

My biggest source of anxiety is I'm always afraid of going online. Si, I always wonder can it be that I send Bitcoin without being online through a cold wallet? 