I had the same problem. My large front detached garage is 125 feet from my house and my rear barn is 100 feet from my house. I purchased the eero mesh devices and now I have wifi in both. Works great !
I also have the Ladder Max. The majority of my inspections are commercial. The gutters are not usually the thin gage that are on houses. Note that even the ladder Max can slide when you transition to the roof. I always try and tie off.
I have 2 of the xtend & climb pro ladders. One is 12.5ft. and the other is 16ft. I use them all the time in my inspection business. Just keep them clean. I do notice they can slide easily if you put them against a gutter. I always try to tie them off.
I have a couple of Harbor Freight's Quantum 310. I am a building inspector and sometimes I crawl through some nasty areas and even up on cat walks. If it gets knocked off and falls I'm out $12 bucks. They seem to last for a fair amount of time with Lithium batteries.
For me and my use they work...