I no longer feel pleasure in hobbies or activities?

Be it ps4, drawing, playing on your cell phone, training. I just don't enjoy anything, so I just want to sleep and never wake up. I sometimes feel lonely when I sit alone in the room doing something. I get a strange feeling, sometimes tense and don't know what to do. These beautiful memories with my ex girlfriend break me down. I try to distract myself, but then these phases come, so these strange feelings etc. (mostly in the evening / at night). I do not know what to do. I'm just unhappy.

If this has occurred in the Corona period, it is normal, everyone is bored.

So boring that I comment on your comment, even though you recently liked my "boredom comment". Mega!

I think you have classic lovesickness. You don't like anything, you want to die and just think of the good times with her. It hurts, but it goes away. Each of us experiences this in his life and will surely happen to you more often.

Think of the song by Sarah Conner, it's exactly about the topic, that fits.

Fall in love again, be open to new things

I feel totally similar right now. I'm mostly over my ex-boyfriend, but the corona crisis gives you a lot of time to think about the past. That makes you sad and hurts. Add to that the boredom and the general tension, maybe fears for the future - and then you are still alone in this new state, you can't share your worries with a partner as usual. You feel overwhelmed and find nothing to really enjoy.

I can't give you any tips. I can only tell you that there are other people who are going through something very similar. Maybe it helps not to be alone.

Stay healthy and take care of yourself.