symbols can be done on computers or iPhones if you are under the age of 12.:)
On a iPhone tap then hold 0. Then slide finger up and towards the left to display a symbol.
On computers it varies by operating system. Hold down Alt and type 248 then release Alt key. To place F immediately after symbol just use shift F like you are capitalizing normally. Macs are different which is no great surprise. Use to be shift option 8. Now you can do it with emoji symbol function. But as a man I try not to get in touch with my emoji side of my self.