Level 2. It's hopeless

Starting with +1. and 2 players... still get game over with 2-3 obstacles... Even if I farm gold like crazy, I can't advance... This is Level 2 lol. If it's up to 20... should I really give up... Level 5 feels like an insurmountable wall too... Ads, heating, hmm..... Will it get better if I upgrade speed and weapons to 20+? It's too hard ㅡㅡㅋ