If Apple or a certified repairer fixed it take it back to the store and point out the issues. They are very good.
if someone else repaired it, still take it to Apple to ask if it can be fixed - but this could be costly and you won’t be covered by an apple warranty (subject to jurisdictional legislation) for repairs in this case.
sounds like a repair that didn’t go as planned. Apples in store diagnostics will work out the issue.
I managed to smash my screen and damage the internal camera wiring (which I didn’t realise at the time) due to an unfortunate drop where it landed at speed face down on two small and sharp protruding rocks in old bitumen. The Apple repair cost was very reasonable.
There was one tiny issue when I got it back and Apple fixed it with a couple of days turn around at no cost and they were polite and professional. The fix was high quality, the remaining issue was fixed without question and quickly.
The Apple repair with a warranty for issues relating to repair was significantly less expensive than I expected.
if it hadn’t been Apple repairing it I’m pretty sure it would have ended up costing more in the end, as the repair wouldn’t be covered by a warranty and a third party repairer may have wanted to charge me again for the second fix. I also didn’t compromise my original warranty or legislative guarantees by using the Apple process
options that may seem as cheap at first glance, often turn out to be more expensive in the long run.