Multiple problems with hearing

1. When my headphones are plugged in the sound is still coming through the speakers, I tried to cleans the ear jack but still nothing

2. When I turn off my phone and try to turn it on again it takes a while to turn on, more then usual and will stay a long time with the apple icon on and nothing else

3. When I answer calls I can’t hear the other person or put my phone on speaker, and now it just immediately disconnects.

4. I don’t know if these problems are related or are individual problems but they all started happening recently and I have had my iPhone 7 for approximately a year and it worked perfectly fine up until now. Anyone knows what’s going on, my problem with my phone seems more complicated than others so I can’t find an answer anywhere online.