I changed my appleid do I lose my apps

Any for fee apps will need to be purchased again, at full cost, with the new AppleID in order to be able to update them with that AppleID. Purchased content is forever tied to the AppleID used when making the purchase.

The apps will still be there, but they will be connected to the old Apple ID.

To get free apps connected to the new Apple ID, delete them and download them again with the new Apple ID.

If you have paid apps you need to do the same, but you will need to purchase them again.

Good luck!