This is a very lonely road we travel. I care for my husband with dementia and we also have had the same experience from friends, children and grandchildren. Perhaps our families do not understand how lonely we are since physically we are together but we are generally with a stranger who carries on no meaningful conversation. Our community has a memory cafe that meets once per month for dementia person and their caregiver. Perhaps something similiar is available in your community? Search out any resources via Alzheimer's Association and Duet. Duet offers via zoom a caregiver support group. Also a caregiver support group via zoom through Mayo Clinic that is open to all. If your loved one is able I find it helps to just get out for a meal or coffee. Just to be around other people. Helps us both.