OCD about wet phone what should I do?

I just got a new phone 2 weeks ago, it's an iPhone XR and I paid $800 for it. Today I got soda on the back of it, I was so stupid. I put my cup down on my table and the cup was leaking soda and I had my phone on the same table and soda got all over the back of my phone, I cleaned it off the phone fast and tested the phone and it still work perfectly, nothing seems wrong with it but I have thoughts in my head thinking "oh no what if something is wrong with it'. Now my mind thinks something is wrong with it but it still works like it did before. Does this sound like OCD? I'm going crazy.

What is wrong with the sound on my iPhone 7?

Okay so this is a confusing one so I would appreciate any help at all.

Over a month ago, I received a phone call but when I answered I simply couldn't hear the person on the other side. It happened again when I tried to ring back, so I turned my phone off and on to see if it would fix, but it took around 5 minutes for my phone to turn back on, it simply only had the Apple logo. When it turned back on, I realised all sound on my phone was broken - no ringer, no Spotify/Yourube, I couldn't make or receive calls.

Upon talking with Apple, they didn't know the problem so they said I would simply have to send it for repairs, but due to the price I decided to hold off. For a month I had to go without sound.

Fast forward to just over a week ago, I turned my phone off and on because I hadn't for a month, it turned on immediately and the sound was fixed.

5 days ago, the same problem occurred with the phone call. I turned the phone off, the sound went off. I turned it off and on twice and then the problem was fixed.

This morning, the problem occurred again, but after turning it off and on multiple times, waiting 5 minutes each time for the phone to reboot, the problem is still here. No sounds, no calls. Nothing.

Does anyone know what the problem is or how I can fix this?

Why can't I change the YouTube screen orientation on iPhone?

I recently switched from android to iPhone and with my old phone I could easily switch from portrait to landscape on my phone, even when browsing videos. But on my new iPhone I can't seem to do that and I can only go landscape when I make my videos full screen. This gets annoying when browsing because I have to keep turning my phone to browse. (Yes, I have unlocked the orientation lock) please help!

How to recover photos from old iPhone? - 1

I used to have a different sets of photos from an old iPhone 6. I don't know what happened but photos from my new iPhone 8 synced to my old iPhone 6 and now photos from the old iPhone are all gone as they were replace by photos from the new iPhone. How can I retrieve the deleted photos from my old iPhone 6?