Hi @Lilyq and welcome firstly to the forum 
Part of the feeling isolated and lonely is not connecting with people. You have made a good step forward with this by joining the forum. There are many people here who feel the same as you do but we also support each other to feel more connected and less alone.
What kind of things do you like to do?
There are many threads on here where members discuss, create and share things they are doing - whether it be sport, craft, art or their love of cats (just to name a few).
Also are there any other groups in your area that you can join or somewhere you can volunteer a couple of days a week - maybe your child's school needs volunteers.
Have a look around the forum and if you have any questions then tag me and I will see if I can help you out.
Once again - welcome to the forum and I hope you find it a supportive, caring and compasionate community to be part of.
Zoe 