Help me get rid of my virus

I tried what the link said to do an now the calendar changes what it says every time I look at it!!

-Adult content

- iPhone may have a virus

-Attention risk of unsecured network

Ive also bought Avast security app an that has done nothing at all

it has not even detected a virus was pretty much waste of money

Okay

i removed the avast app

Is there a way I can back up from a few days ago? When I look at the backup it says last backup was today I’ve had this virus since yesterday but I see no options to choose days of other backups?

Just a update you guys was completely right about the extra calendar!! I did delete the 1st one but I had more then one an I thought the other calendar was what came with the phone an I deleted it anyways an that was the exact prob an all the stuff did go away!! Thanks for all the help guys!!

I have iPhone X

I did this an yes there was a second calendar

I deleted it but it changed the events to ••support your iPhone••

man the events are still going off an there’s no option to delete the event?

I did this an yes there was a extra calendar I deleted it but still have the adult content twice a hour going off it moves ahead keeps it going for 24 hours

Tomorrow I’m going to bring my phone into Verizon store see if they can help I’m since I’m not close to any Apple store