Those programs will not compete. Defender is not an anti-virus. It is anti-malware. It is not recommended to run 2 antivirus at one time. Two antimalware programs at once is fine (more is overkill).
Donna, I will do my best to help you. Your question is long. If I leave anything out just get back with me on what I missed. First of all, due to some of the things you mentioned, there is a strong possibility
quora.com/Why-do-companies-use-a-separate-domain-for-their-CDN webmasters.stackexchange.com/questions/25629/why-do-some-large-companies-use-a-different-domain-for-sending-emails discountdomainsuk
You don't specify what you mean by "programs", but I'll assume you want financial assistance or other services to help get by day-to-day. My first search seems to be what you want: https://www.benefits
Hi James, It's a secure site. It belongs to Google. Companies like Google own many domains. If you're not sure who owns a domain, there are many online sites that offer assistance like: ip-adress