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Educate yourself. The Big Bang was not an explosion. The Big Bang refers to the observation that on cosmic scales objects are all receding from earth, and furthermore the rate at which they are receding is directly proportional to their distance from earth. As you might expect there are objects that are traveling toward earth, or along tangential paths, but these are local objects that are gravitationally bound within our galaxy. Outside the galaxy, the situation is as I described— all galaxies are receding from us, with more distant ones receding faster.

Now you can believe the model or not, but at least get the details right and don’t argue against straw men. The Big Bang simply refers to the fact that if everything is currently receding from us, the best explanation for that is that the space (technically spacetime) between us and those other objects is expanding. This means that matter in the universe is becoming less dense over time, and that the universe is getting colder over time. Logically, then this implies that in the past the universe must have been more dense and hotter. This hot dense state is the origin of the Big Bang.

This state was hot enough that ordinary matter would not have existed. Matter would have formed via pair production from the energetic radiation that was dominate in the early universe. The first matter would not have been in the form of atoms but rather free electrons and quarks. The quarks combined into free protons and neutrons as the universe further expanded. These neutrons and protons combined to form helium nuclei, with most protons left free. Hence we get the primal abundance of hydrogen and helium predicted by the model - another observation explained by it.

This plasma was not transparent to electromagnetic radiation, which still permeated the universe. Even if stars had formed at this point, light from them would have been absorbed by the plasma comprising all the matter in the universe. As the universe cooled more though neutral atoms formed with the result that the universe became transparent. Therefore the radiation permeating the universe was free to travel everywhere within it. Well, that radiation is still permeating the universe. It is now much less energetic because of the cooling and expansion of space, so it no longer is gamma radiation or x-rays, but rather is microwave radiation- another observation predicted and explained by the model.

There are other more technical observations supporting the BB, but I’m not an astrophysicist so I’m not sure I can adequately explain them. The point though is that “There was no Big Bang because an explosion wouldn’t dlook like this” attempt to discredit the mode is really a lame and bogus argument. Please do educate yourself on the actual model, what it predicts and how well those predictions match actual observations. You might well learn something in the process and you might be less inclined to present overly simplistic arguments against scientific theories like the Big Bang