Bug Spray

Hello I plan on spending this spring and summer camping with my family buy over the years I have developed being allergic to mosquitoes. my father also has this and some others on his side, so it’s not very uncommon to see but my problem lies on I cannot find a bug spray that works. I have tried many throughout the years and it seems like it does close to nothing. My skin tends to swell up and I get crazy itchy in the whole body part that gets bit and then I will mostly scar afterwards. I want to spend this summer enjoy enjoying the outdoor outdoors and would appreciate any recommendations. I live in Nebraska where there are a lot of horseflies also and I didn’t know if they made bug spray that can combat their bites, they hurt a lot lol.