Hi OP, please try not to worry too much about this - I know it can feel like a big deal, and it is when you're a new/expectant new mum, but as long as you go easy on yourself, whatever you decide will be the right thing for you and your baby.
It's not a binary choice (although it can be if you want it to be). Formula is a completely adequate way to feed your baby, it's not substandard or dangerous as long as it's prepared correctly and it's life-saving for many babies. If you choose not to breastfeed, you have absolutely nothing to feel guilty about.
However, if you would like to give your child the nutritional benefits of breastmilk but are uncomfortable with the idea of the physical act of breastfeeding, there's a lot you can do.
Breastmilk is beneficial throughout a baby's development; however the huge benefits over formula are in the early days, weeks and months. How would you feel about (for example) harvesting colostrum antenatally, and feeding your baby with that via syringe for a as long as you are happy to hand express it? Colostrum is a perfect first food for a baby, they need very little to thrive, and having an advance supply would also save you the bother of mastering the art faff of bottles, sterilising, formula prep etc for a couple of days while you recover from birth. Guidance on colostrum harvesting here: abm.me.uk/breastfeeding-information/antenatal-expression-colostrum/
A lot of mums chose to combi feed these days - for some mums this may mean alternating bottles of formula with breastfeeding, for others it may instead mean pumping breastmilk for some of baby's bottles instead of exclusively using formula. Any amount of breastmilk is worth having.
However, as someone who was initially forced to exclusively pump for my second baby as she wouldn't take the boob, there is a tradeoff to be made in terms of how beneficial you feel breastmilk is for baby vs the time and energy required to establish and maintain a milk supply without direct breastfeeding - for some women it is easy and preferable, for others it is time-consuming and emotionally tough so this might only be worth considering if you are really concerned that baby get the benefit of breastmilk. It will depend on how much weight you put on that. I was only able to manage pumping because I was so determined my baby would eventually breastfeed and I needed to maintain my supply - without that motivation it would have been hard to persist.
Essentially, this is about you. If what you need is to be told it is OK not to try breastfeeding and use formula from the off - it is. It's fine. It's what the vast majority of women end up doing within a few days/weeks/months of birth, and their babies are absolutely fine. There are benefits, like being able to share feeds and nights, being able to leave house without baby for longer periods earlier, less pressure on you to be the baby's whole entire world right when you are most tired and overwhelmed post birth. As long as you prepare formula properly according to guidance, your baby will come to no harm, and although statistically bf/bm has benefits, these benefits are in aggregate across huge studies not individual by individual - there are breastfed babies who get asthma, allergies, become obese, get infant cancers, just as there are ff babies who get none of these things and have exceptional good health. Formula is a fine choice.
If however you are really worried about your baby missing out on the benefits of breastmilk, there are lots of ways you can approach this to give baby as much of your milk as possible without having to 'power through' your discomfort with direct breastfeeding. And keep an open mind. Personally I found birth extremely effective at disinhibiting me about my body - when half the hospital seems to have had their hand up your chuff at some point and you've pooped in a cardboard bowl the midwife had only asked you to pee in, shame kind of goes out the window :P But we are all completely different. You may in the aftermath feel like giving bf a go; or you may still feel it is not for you, perhaps even more so than before. Decide what you want now, and plan for it, but be prepared to go with the flow as you and baby work it out between you.