It’s worthwhile to spend a little time learning about gear ratios and gear inches. The lower the “gear inches” calculated the easier climbing will be – the term refers to the number of inches the bike will go for each revolution of the pedals. The exact figure depends on both the chainring size, tire size and the rear cogs. Some bikes come with a 30T chainring and a 12 speed rear cassette with the largest cog being around 50 teeth. This calculates to about a 16 inch gearing for a 27 inn tire. This is about as slow as most people can go without spinning out or falling over. Anything less than 20 is considered pretty good for most climbing. To put it in perspective the old pros doing the Giro D’Italia climbing the Alps back in the day used a “small” 42t chainring and a “large” 24t rear cog – close to 47 inches. I think they use more reasonable gearing now. A 26t chainring and 42 tooth rear cog gives about the same gear inches as the 30-50. It will spin out out the descents in a big gear, if you’re concerned at all about that – most aren’t.
There’s also nothing wrong with doing an occasional “hike a bike”. It takes some pressure off your derrière and can save a fair bit of money.
Here is a link to a gear calculator: https://www.bikecalc.com/gear_inches